Thank you so much for the video and log file!
From the log file, it looks like the files related to the content do not exist on the external drive
ERROR 2018-12-20 10:11:42,989 importcontent An error occurred during content import: [Errno 2] No such file or directory: '/Volumes/Samsung_T5/KOLIBRI_DATA/content/storage/2/6/26c6d8816e36f3211ff8669bc5ef7cb8.mp4'
Did you export the content of the
biology folder you tried to import in the video into the external drive first?
One thing to note is that we currently have a limitation on local content import that the topic content (e.g.
biology folder in this case) shown in the import UI may not actually exist in the external drive. If you would like to find out whether or not the content exist on the external drive, you will need to click the topics in the import UI til the bottom level (e.g. a specific video file or exercise) to figure out.