# Kolibri Crashing or Running slow

**URL:** <https://community.learningequality.org/t/kolibri-crashing-or-running-slow/3377>\
**Category:** Kolibri\
**Created:** [October 16, 2024, 3:43pm UTC](https://community.learningequality.org/t/kolibri-crashing-or-running-slow/3377 "2024-10-16T15:43:33Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![safi\_khan](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.learningequality.org/safi_khan/32/933_2.png) [@safi\_khan](https://community.learningequality.org/u/safi_khan)\
**Post date:** [October 16, 2024, 3:43pm UTC](https://community.learningequality.org/t/kolibri-crashing-or-running-slow/3377/1 "2024-10-16T15:43:33Z")

</div>

We are running our kolibri server on AWS behind a load balancer and when I look at the instance resources, everything looks normal  
Memory usage \<30%  
CPU utilization - \<60%  
But when we try to run a report or try loading the learning videos, kolibri either crashes and returns 500 or runs really slow

This log is from the kolibri.txt

```auto
ERROR 2024-10-15 00:33:56,546 django.request Internal Server Error: /api/content/contentnodeprogress/
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/kolibri/dist/morango/models/fields/uuids.py", line 40, in get_db_prep_value
    value = uuid.UUID(value)
  File "/usr/lib/python3.8/uuid.py", line 168, in __init__
    hex = hex.replace('urn:', '').replace('uuid:', '')
AttributeError: 'KolibriAnonymousUser' object has no attribute 'replace'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/kolibri/dist/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/kolibri/dist/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/usr/lib/python3/dist-packages/kolibri/dist/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/usr/lib/python3/dist-packages/kolibri/dist/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/usr/lib/python3/dist-packages/kolibri/dist/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/kolibri/core/content/api.py", line 1715, in list
    queryset = self.filter_queryset(self.get_queryset())
  File "/usr/lib/python3/dist-packages/kolibri/dist/rest_framework/generics.py", line 150, in filter_queryset
    queryset = backend().filter_queryset(self.request, queryset, self)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django_filters/rest_framework/backends.py", line 96, in filter_queryset
    return filterset.qs
  File "/usr/lib/python3/dist-packages/kolibri/dist/django_filters/filterset.py", line 243, in qs
    qs = self.filter_queryset(qs)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django_filters/filterset.py", line 230, in filter_queryset
    queryset = self.filters[name].filter(queryset, value)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django_filters/filters.py", line 779, in __call__
    return self.method(qs, self.f.field_name, value)
  File "/usr/lib/python3/dist-packages/kolibri/core/content/api.py", line 1508, in filter_by_lesson
    lesson = Lesson.objects.filter(
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/query.py", line 674, in first
    for obj in (self if self.ordered else self.order_by('pk'))[:1]:
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/query.py", line 280, in __iter__
    self._fetch_all()
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/query.py", line 1324, in _fetch_all
    self._result_cache = list(self._iterable_class(self))
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/query.py", line 51, in __iter__
    results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/sql/compiler.py", line 1162, in execute_sql
    sql, params = self.as_sql()
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/sql/compiler.py", line 528, in as_sql
    where, w_params = self.compile(self.where) if self.where is not None else ("", [])
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/sql/compiler.py", line 445, in compile
    sql, params = node.as_sql(self, self.connection)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/sql/where.py", line 81, in as_sql
    sql, params = compiler.compile(child)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/sql/compiler.py", line 445, in compile
    sql, params = node.as_sql(self, self.connection)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/fields/related_lookups.py", line 132, in as_sql
    return super().as_sql(compiler, connection)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/lookups.py", line 315, in as_sql
    return super().as_sql(compiler, connection)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/lookups.py", line 194, in as_sql
    rhs_sql, rhs_params = self.process_rhs(compiler, connection)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/lookups.py", line 301, in process_rhs
    return super().process_rhs(compiler, connection)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/lookups.py", line 101, in process_rhs
    return self.get_db_prep_lookup(value, connection)
  File "/usr/lib/python3/dist-packages/kolibri/dist/django/db/models/lookups.py", line 219, in get_db_prep_lookup
    [get_db_prep_value(value, connection, prepared=True)]
  File "/usr/lib/python3/dist-packages/kolibri/dist/morango/models/fields/uuids.py", line 42, in get_db_prep_value
    raise TypeError(self.error_messages["invalid"] % {"value": value})
KeyError: 'invalid'

```

Please help

---

<div class="post-metadata">

**Author:** ![blaine](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.learningequality.org/blaine/32/479_2.png) [@blaine](https://community.learningequality.org/u/blaine)\
**Post date:** [October 16, 2024, 3:51pm UTC](https://community.learningequality.org/t/kolibri-crashing-or-running-slow/3377/2 "2024-10-16T15:51:07Z")

</div>

Hi @safi_khan,

Could you please provide these details:

- Kolibri version
- Operating system name and version
- Installation method (`.pex`, via `pip`, or the Debian installer, etc)

Regards,  
Blaine

---

<div class="post-metadata">

**Author:** ![safi\_khan](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.learningequality.org/safi_khan/32/933_2.png) [@safi\_khan](https://community.learningequality.org/u/safi_khan)\
**Post date:** [October 16, 2024, 3:52pm UTC](https://community.learningequality.org/t/kolibri-crashing-or-running-slow/3377/3 "2024-10-16T15:52:38Z")

</div>

Hi @blaine

kolibri, version 0.17.0  
OS - Ubuntu  
Installation method - apt-get installation

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<div class="post-metadata">

**Author:** ![blaine](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.learningequality.org/blaine/32/479_2.png) [@blaine](https://community.learningequality.org/u/blaine)\
**Post date:** [October 16, 2024, 4:05pm UTC](https://community.learningequality.org/t/kolibri-crashing-or-running-slow/3377/4 "2024-10-16T16:05:17Z")

</div>

Thank you @safi_khan for providing that information.

Were the videos that you’re having issues with imported from a private or public channel? Could you share the channel ID, preferably in a direct message (DM), since the channel ID could be used to import the channel.

I’m going to try to replicate your issue

---

<div class="post-metadata">

**Author:** ![blaine](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.learningequality.org/blaine/32/479_2.png) [@blaine](https://community.learningequality.org/u/blaine)\
**Post date:** [October 16, 2024, 5:22pm UTC](https://community.learningequality.org/t/kolibri-crashing-or-running-slow/3377/5 "2024-10-16T17:22:24Z")

</div>

Furthermore, reflecting on your initial description of your Kolibri implementation, are you using a load balancer because you have multiple VMs / instances running Kolibri behind the load balancer? Or is there only one Kolibri instance?