# Kolibri is unable to start **URL:** \ **Category:** Kolibri\ **Created:** [June 6, 2020, 8:02pm UTC](https://community.learningequality.org/t/kolibri-is-unable-to-start/1562 "2020-06-06T20:02:51Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![marcoalvarado](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.learningequality.org/marcoalvarado/32/685_2.png) [@marcoalvarado](https://community.learningequality.org/u/marcoalvarado)\ **Post date:** [June 6, 2020, 8:02pm UTC](https://community.learningequality.org/t/kolibri-is-unable-to-start/1562/1 "2020-06-06T20:02:51Z")
Hello, After working well for a couple of weeks, Kolibri server stopped working with message “Kolibri is unable to start”. ## Technical details - Kolibri version: 0.13 - Operating system: Windows 10 - Browser: Chrome 83.0.4103.61 Below daemon and kolibri.txt content: Daemon.txt ```auto e[37mINFO Starting Kolibri 0.13.2e[0m e[37mINFO ENGINE Listening for SIGTERM.e[0m e[37mINFO ENGINE Listening for SIGINT.e[0m e[37mINFO ENGINE Bus STARTINGe[0m e[31mERROR ENGINE Error in 'start' listener > Traceback (most recent call last): File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py", line 1193, in _execute_context context) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\default.py", line 509, in do_execute cursor.execute(statement, parameters) sqlite3.OperationalError: database is locked The above exception was the direct cause of the following exception: Traceback (most recent call last): File "C:\Python34\lib\site-packages\kolibri\dist\cherrypy\process\wspbus.py", line 230, in publish output.append(listener(*args, **kwargs)) File "C:\Python34\lib\site-packages\kolibri\utils\server.py", line 82, in start scheduler.clear_scheduler() File "C:\Python34\lib\site-packages\kolibri\core\tasks\scheduler.py", line 211, in clear_scheduler self.cancel(None) File "C:\Python34\lib\site-packages\kolibri\core\tasks\scheduler.py", line 205, in cancel q.delete(synchronize_session=False) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\query.py", line 3346, in delete delete_op.exec_() File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py", line 1326, in exec_ self._do_exec() File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py", line 1518, in _do_exec self._execute_stmt(delete_stmt) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py", line 1333, in _execute_stmt mapper=self.mapper) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\session.py", line 1176, in execute bind, close_with_result=True).execute(clause, params or {}) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py", line 948, in execute return meth(self, multiparams, params) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\sql\elements.py", line 269, in _execute_on_connection return connection._execute_clauseelement(self, multiparams, params) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py", line 1060, in _execute_clauseelement compiled_sql, distilled_params File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py", line 1200, in _execute_context context) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py", line 1413, in _handle_dbapi_exception exc_info File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\util\compat.py", line 265, in raise_from_cause reraise(type(exception), exception, tb=exc_tb, cause=cause) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\util\compat.py", line 248, in reraise raise value.with_traceback(tb) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py", line 1193, in _execute_context context) File "C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\default.py", line 509, in do_execute cursor.execute(statement, parameters) sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) database is locked [parameters: ('kolibri',)] (Background on this error at: http://sqlalche.me/e/e3q8) e[0m e[31mERROR ENGINE Error in HTTP server: shutting down Traceback (most recent call last): File "C:\Python34\lib\site-packages\kolibri\dist\cherrypy\process\servers.py", line 225, in _start_http_thread self.httpserver.start() File "C:\Python34\lib\site-packages\kolibri\dist\cheroot\server.py", line 1532, in start raise socket.error(msg) OSError: No socket could be created -- (('0.0.0.0', 8080): Solo se permite un uso de cada direcciÛn de socket (protocolo/direcciÛn de red/puerto)) e[0m e[37mINFO ENGINE Bus STOPPINGe[0m e[37mINFO ENGINE HTTP Server cherrypy._cpwsgi_server.CPWSGIServer(('0.0.0.0', 8080)) already shut downe[0m e[37mINFO ENGINE Bus STOPPEDe[0m e[37mINFO ENGINE Bus EXITINGe[0m e[37mINFO ENGINE Bus EXITEDe[0m ``` kolibri.txt INFO 2020-05-22 21:24:14,703 cli Running Kolibri as background process ERROR 2020-05-22 21:24:15,129 cli Could not detect an IP address that Kolibri binds to, but try opening up the following addresses: INFO 2020-05-22 21:24:15,376 cli Going to background mode, logging to C:\Users\emilio.kolibri\logs\kolibri.txt INFO 2020-05-22 21:24:15,381 server Starting Kolibri 0.13.2 INFO 2020-05-22 21:24:16,210 cherrypy.error ENGINE Listening for SIGINT. INFO 2020-05-22 21:24:16,211 cherrypy.error ENGINE Listening for SIGTERM. INFO 2020-05-22 21:24:16,211 cherrypy.error ENGINE Bus STARTING INFO 2020-05-22 21:24:18,303 utils Started new JOBCHECKER thread ID#f244089c3cc9427e94a11a581c2a30af INFO 2020-05-22 21:24:18,317 utils Started new JOBCHECKER thread ID#4a58ff9ae87a43a18da2d76dcf012d3a INFO 2020-05-22 21:24:18,319 utils Started new SCHEDULECHECKER thread ID#abcb9f2c3ef741fb8b42fd54c1f52884 INFO 2020-05-22 21:24:19,296 search Registering ourselves to zeroconf network with id ‘e04abf468f1c72c3bfdf450f8af05d96’… WARNING 2020-05-22 21:24:29,122 utils Ping failed (could not connect). Trying again in 15 minutes. INFO 2020-05-22 21:26:44,476 apps Running Kolibri with the following settings: kolibri.deployment.default.settings.base INFO 2020-05-22 21:26:48,133 cli Running Kolibri as background process ERROR 2020-05-22 21:26:48,280 cli Could not detect an IP address that Kolibri binds to, but try opening up the following addresses: INFO 2020-05-22 21:26:48,332 cli Going to background mode, logging to C:\Users\emilio.kolibri\logs\kolibri.txt INFO 2020-05-22 21:26:48,336 server Starting Kolibri 0.13.2 INFO 2020-05-22 21:26:48,387 cherrypy.error ENGINE Listening for SIGTERM. INFO 2020-05-22 21:26:48,388 cherrypy.error ENGINE Listening for SIGINT. INFO 2020-05-22 21:26:48,389 cherrypy.error ENGINE Bus STARTING ERROR 2020-05-22 21:26:54,502 cherrypy.error ENGINE Error in ‘start’ listener \\> Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1193, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\default.py”, line 509, in do\_execute cursor.execute(statement, parameters) sqlite3.OperationalError: database is locked The above exception was the direct cause of the following exception: Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\cherrypy\process\wspbus.py”, line 230, in publish output.append(listener(\*args, \*\*kwargs)) File “C:\Python34\lib\site-packages\kolibri\utils\server.py”, line 82, in start scheduler.clear\_scheduler() File “C:\Python34\lib\site-packages\kolibri\core\tasks\scheduler.py”, line 211, in clear\_scheduler self.cancel(None) File “C:\Python34\lib\site-packages\kolibri\core\tasks\scheduler.py”, line 205, in cancel q.delete(synchronize\_session=False) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\query.py”, line 3346, in delete delete\_op.exec\_() File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1326, in exec\_ self.\_do\_exec() File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1518, in \_do\_exec self.\_execute\_stmt(delete\_stmt) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1333, in \_execute\_stmt mapper=self.mapper) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\session.py”, line 1176, in execute bind, close\_with\_result=True).execute(clause, params or {}) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 948, in execute return meth(self, multiparams, params) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\sql\elements.py”, line 269, in \_execute\_on\_connection return connection.\_execute\_clauseelement(self, multiparams, params) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1060, in \_execute\_clauseelement compiled\_sql, distilled\_params File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1200, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1413, in \_handle\_dbapi\_exception exc\_info File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\util\compat.py”, line 265, in raise\_from\_cause reraise(type(exception), exception, tb=exc\_tb, cause=cause) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\util\compat.py”, line 248, in reraise raise value.with\_traceback(tb) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1193, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\default.py”, line 509, in do\_execute cursor.execute(statement, parameters) sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) database is locked [parameters: (‘kolibri’,)] (Background on this error at: [Error Messages — SQLAlchemy 2.0 Documentation](http://sqlalche.me/e/e3q8)) ERROR 2020-05-22 21:26:54,660 cherrypy.error ENGINE Error in HTTP server: shutting down Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\cherrypy\process\servers.py”, line 225, in \_start\_http\_thread self.httpserver.start() File “C:\Python34\lib\site-packages\kolibri\dist\cheroot\server.py”, line 1532, in start raise socket.error(msg) OSError: No socket could be created – ((‘0.0.0.0’, 8080): Solo se permite un uso de cada direcciÛn de socket (protocolo/direcciÛn de red/puerto)) INFO 2020-05-22 21:26:54,661 cherrypy.error ENGINE Bus STOPPING INFO 2020-05-22 21:26:54,661 cherrypy.error ENGINE HTTP Server cherrypy.\_cpwsgi\_server.CPWSGIServer((‘0.0.0.0’, 8080)) already shut down INFO 2020-05-22 21:26:54,681 cherrypy.error ENGINE Bus STOPPED INFO 2020-05-22 21:26:54,681 cherrypy.error ENGINE Bus EXITING INFO 2020-05-22 21:26:54,683 cherrypy.error ENGINE Bus EXITED INFO 2020-05-22 21:27:12,793 apps Running Kolibri with the following settings: kolibri.deployment.default.settings.base INFO 2020-05-22 21:27:14,518 cli Running Kolibri as background process ERROR 2020-05-22 21:27:14,661 cli Could not detect an IP address that Kolibri binds to, but try opening up the following addresses: INFO 2020-05-22 21:27:14,718 cli Going to background mode, logging to C:\Users\emilio.kolibri\logs\kolibri.txt INFO 2020-05-22 21:27:14,728 server Starting Kolibri 0.13.2 INFO 2020-05-22 21:27:14,786 cherrypy.error ENGINE Listening for SIGINT. INFO 2020-05-22 21:27:14,788 cherrypy.error ENGINE Listening for SIGTERM. INFO 2020-05-22 21:27:14,796 cherrypy.error ENGINE Bus STARTING ERROR 2020-05-22 21:27:20,649 cherrypy.error ENGINE Error in ‘start’ listener \\> Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1193, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\default.py”, line 509, in do\_execute cursor.execute(statement, parameters) sqlite3.OperationalError: database is locked The above exception was the direct cause of the following exception: Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\cherrypy\process\wspbus.py”, line 230, in publish output.append(listener(\*args, \*\*kwargs)) File “C:\Python34\lib\site-packages\kolibri\utils\server.py”, line 82, in start scheduler.clear\_scheduler() File “C:\Python34\lib\site-packages\kolibri\core\tasks\scheduler.py”, line 211, in clear\_scheduler self.cancel(None) File “C:\Python34\lib\site-packages\kolibri\core\tasks\scheduler.py”, line 205, in cancel q.delete(synchronize\_session=False) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\query.py”, line 3346, in delete delete\_op.exec\_() File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1326, in exec\_ self.\_do\_exec() File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1518, in \_do\_exec self.\_execute\_stmt(delete\_stmt) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1333, in \_execute\_stmt mapper=self.mapper) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\session.py”, line 1176, in execute bind, close\_with\_result=True).execute(clause, params or {}) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 948, in execute return meth(self, multiparams, params) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\sql\elements.py”, line 269, in \_execute\_on\_connection return connection.\_execute\_clauseelement(self, multiparams, params) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1060, in \_execute\_clauseelement compiled\_sql, distilled\_params File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1200, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1413, in \_handle\_dbapi\_exception exc\_info File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\util\compat.py”, line 265, in raise\_from\_cause reraise(type(exception), exception, tb=exc\_tb, cause=cause) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\util\compat.py”, line 248, in reraise raise value.with\_traceback(tb) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1193, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\default.py”, line 509, in do\_execute cursor.execute(statement, parameters) sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) database is locked [parameters: (‘kolibri’,)] (Background on this error at: [Error Messages — SQLAlchemy 2.0 Documentation](http://sqlalche.me/e/e3q8)) ERROR 2020-05-22 21:27:20,764 cherrypy.error ENGINE Error in HTTP server: shutting down Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\cherrypy\process\servers.py”, line 225, in \_start\_http\_thread self.httpserver.start() File “C:\Python34\lib\site-packages\kolibri\dist\cheroot\server.py”, line 1532, in start raise socket.error(msg) OSError: No socket could be created – ((‘0.0.0.0’, 8080): Solo se permite un uso de cada direcciÛn de socket (protocolo/direcciÛn de red/puerto)) INFO 2020-05-22 21:27:20,764 cherrypy.error ENGINE Bus STOPPING INFO 2020-05-22 21:27:20,765 cherrypy.error ENGINE HTTP Server cherrypy.\_cpwsgi\_server.CPWSGIServer((‘0.0.0.0’, 8080)) already shut down INFO 2020-05-22 21:27:20,783 cherrypy.error ENGINE Bus STOPPED INFO 2020-05-22 21:27:20,783 cherrypy.error ENGINE Bus EXITING INFO 2020-05-22 21:27:20,785 cherrypy.error ENGINE Bus EXITED INFO 2020-05-22 21:40:58,604 cli Already stopped: Stopped (1) INFO 2020-05-22 21:41:22,520 apps Running Kolibri with the following settings: kolibri.deployment.default.settings.base INFO 2020-05-22 21:41:24,291 cli Running Kolibri as background process ERROR 2020-05-22 21:41:24,455 cli Could not detect an IP address that Kolibri binds to, but try opening up the following addresses: INFO 2020-05-22 21:41:24,511 cli Going to background mode, logging to C:\Users\emilio.kolibri\logs\kolibri.txt INFO 2020-05-22 21:41:24,515 server Starting Kolibri 0.13.2 INFO 2020-05-22 21:41:24,548 cherrypy.error ENGINE Listening for SIGINT. INFO 2020-05-22 21:41:24,549 cherrypy.error ENGINE Listening for SIGTERM. INFO 2020-05-22 21:41:24,550 cherrypy.error ENGINE Bus STARTING ERROR 2020-05-22 21:41:30,385 cherrypy.error ENGINE Error in ‘start’ listener \\> Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1193, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\default.py”, line 509, in do\_execute cursor.execute(statement, parameters) sqlite3.OperationalError: database is locked The above exception was the direct cause of the following exception: Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\cherrypy\process\wspbus.py”, line 230, in publish output.append(listener(\*args, \*\*kwargs)) File “C:\Python34\lib\site-packages\kolibri\utils\server.py”, line 82, in start scheduler.clear\_scheduler() File “C:\Python34\lib\site-packages\kolibri\core\tasks\scheduler.py”, line 211, in clear\_scheduler self.cancel(None) File “C:\Python34\lib\site-packages\kolibri\core\tasks\scheduler.py”, line 205, in cancel q.delete(synchronize\_session=False) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\query.py”, line 3346, in delete delete\_op.exec\_() File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1326, in exec\_ self.\_do\_exec() File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1518, in \_do\_exec self.\_execute\_stmt(delete\_stmt) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1333, in \_execute\_stmt mapper=self.mapper) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\session.py”, line 1176, in execute bind, close\_with\_result=True).execute(clause, params or {}) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 948, in execute return meth(self, multiparams, params) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\sql\elements.py”, line 269, in \_execute\_on\_connection return connection.\_execute\_clauseelement(self, multiparams, params) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1060, in \_execute\_clauseelement compiled\_sql, distilled\_params File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1200, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1413, in \_handle\_dbapi\_exception exc\_info File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\util\compat.py”, line 265, in raise\_from\_cause reraise(type(exception), exception, tb=exc\_tb, cause=cause) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\util\compat.py”, line 248, in reraise raise value.with\_traceback(tb) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1193, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\default.py”, line 509, in do\_execute cursor.execute(statement, parameters) sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) database is locked [parameters: (‘kolibri’,)] (Background on this error at: [Error Messages — SQLAlchemy 2.0 Documentation](http://sqlalche.me/e/e3q8)) ERROR 2020-05-22 21:41:30,497 cherrypy.error ENGINE Error in HTTP server: shutting down Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\cherrypy\process\servers.py”, line 225, in \_start\_http\_thread self.httpserver.start() File “C:\Python34\lib\site-packages\kolibri\dist\cheroot\server.py”, line 1532, in start raise socket.error(msg) OSError: No socket could be created – ((‘0.0.0.0’, 8080): Solo se permite un uso de cada direcciÛn de socket (protocolo/direcciÛn de red/puerto)) INFO 2020-05-22 21:41:30,498 cherrypy.error ENGINE Bus STOPPING INFO 2020-05-22 21:41:30,498 cherrypy.error ENGINE HTTP Server cherrypy.\_cpwsgi\_server.CPWSGIServer((‘0.0.0.0’, 8080)) already shut down INFO 2020-05-22 21:41:30,516 cherrypy.error ENGINE Bus STOPPED INFO 2020-05-22 21:41:30,517 cherrypy.error ENGINE Bus EXITING INFO 2020-05-22 21:41:30,518 cherrypy.error ENGINE Bus EXITED INFO 2020-05-22 21:53:22,237 apps Running Kolibri with the following settings: kolibri.deployment.default.settings.base INFO 2020-05-22 21:53:24,128 cli Running Kolibri as background process ERROR 2020-05-22 21:53:24,290 cli Could not detect an IP address that Kolibri binds to, but try opening up the following addresses: INFO 2020-05-22 21:53:24,347 cli Going to background mode, logging to C:\Users\emilio.kolibri\logs\kolibri.txt INFO 2020-05-22 21:53:24,351 server Starting Kolibri 0.13.2 INFO 2020-05-22 21:53:24,387 cherrypy.error ENGINE Listening for SIGTERM. INFO 2020-05-22 21:53:24,388 cherrypy.error ENGINE Listening for SIGINT. INFO 2020-05-22 21:53:24,389 cherrypy.error ENGINE Bus STARTING ERROR 2020-05-22 21:53:30,176 cherrypy.error ENGINE Error in ‘start’ listener \\> Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1193, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\default.py”, line 509, in do\_execute cursor.execute(statement, parameters) sqlite3.OperationalError: database is locked The above exception was the direct cause of the following exception: Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\cherrypy\process\wspbus.py”, line 230, in publish output.append(listener(\*args, \*\*kwargs)) File “C:\Python34\lib\site-packages\kolibri\utils\server.py”, line 82, in start scheduler.clear\_scheduler() File “C:\Python34\lib\site-packages\kolibri\core\tasks\scheduler.py”, line 211, in clear\_scheduler self.cancel(None) File “C:\Python34\lib\site-packages\kolibri\core\tasks\scheduler.py”, line 205, in cancel q.delete(synchronize\_session=False) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\query.py”, line 3346, in delete delete\_op.exec\_() File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1326, in exec\_ self.\_do\_exec() File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1518, in \_do\_exec self.\_execute\_stmt(delete\_stmt) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\persistence.py”, line 1333, in \_execute\_stmt mapper=self.mapper) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\orm\session.py”, line 1176, in execute bind, close\_with\_result=True).execute(clause, params or {}) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 948, in execute return meth(self, multiparams, params) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\sql\elements.py”, line 269, in \_execute\_on\_connection return connection.\_execute\_clauseelement(self, multiparams, params) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1060, in \_execute\_clauseelement compiled\_sql, distilled\_params File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1200, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1413, in \_handle\_dbapi\_exception exc\_info File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\util\compat.py”, line 265, in raise\_from\_cause reraise(type(exception), exception, tb=exc\_tb, cause=cause) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\util\compat.py”, line 248, in reraise raise value.with\_traceback(tb) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\base.py”, line 1193, in \_execute\_context context) File “C:\Python34\lib\site-packages\kolibri\dist\sqlalchemy\engine\default.py”, line 509, in do\_execute cursor.execute(statement, parameters) sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) database is locked [parameters: (‘kolibri’,)] (Background on this error at: [Error Messages — SQLAlchemy 2.0 Documentation](http://sqlalche.me/e/e3q8)) ERROR 2020-05-22 21:53:30,289 cherrypy.error ENGINE Error in HTTP server: shutting down Traceback (most recent call last): File “C:\Python34\lib\site-packages\kolibri\dist\cherrypy\process\servers.py”, line 225, in \_start\_http\_thread self.httpserver.start() File “C:\Python34\lib\site-packages\kolibri\dist\cheroot\server.py”, line 1532, in start raise socket.error(msg) OSError: No socket could be created – ((‘0.0.0.0’, 8080): Solo se permite un uso de cada direcciÛn de socket (protocolo/direcciÛn de red/puerto)) INFO 2020-05-22 21:53:30,290 cherrypy.error ENGINE Bus STOPPING INFO 2020-05-22 21:53:30,290 cherrypy.error ENGINE HTTP Server cherrypy.\_cpwsgi\_server.CPWSGIServer((‘0.0.0.0’, 8080)) already shut down INFO 2020-05-22 21:53:30,309 cherrypy.error ENGINE Bus STOPPED INFO 2020-05-22 21:53:30,309 cherrypy.error ENGINE Bus EXITING INFO 2020-05-22 21:53:30,311 cherrypy.error ENGINE Bus EXITED Thanks in advance. -Marco ---
**Author:** ![devon](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.learningequality.org/devon/32/481_2.png) [@devon](https://community.learningequality.org/u/devon)\ **Post date:** [June 8, 2020, 7:01pm UTC](https://community.learningequality.org/t/kolibri-is-unable-to-start/1562/2 "2020-06-08T19:01:50Z")
Hi @marcoalvarado From the error messages, just a guess: maybe there is already be an instance of Kolibri running, and it is trying to start a second copy. Have you tried restarting the computer? If restarting doesn’t work, let us know and we’ll investigate further. ---
**Author:** ![marcoalvarado](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.learningequality.org/marcoalvarado/32/685_2.png) [@marcoalvarado](https://community.learningequality.org/u/marcoalvarado)\ **Post date:** [June 12, 2020, 5:07am UTC](https://community.learningequality.org/t/kolibri-is-unable-to-start/1562/3 "2020-06-12T05:07:17Z")
Hi devon, I restarted the server but the issue continues. I decided to uninstall Kolibri in this server and re-install in another one, as the current is shared with more users and troubleshooting in this environment could be too long. Thank you for your help. Best.