My current setup-
Nextcloud Version: 18.104.22.168
System: Ubuntu Subsystem 18.04.1 in windows
I did my Nextcloud setup from the nextcloud-server git repository. After the setup was successful and everything ran successfully, I made some changes according to my preferences in the UI and other things. My friend did his nextcloud setup from my git repository, assuring that everything seems to work other than the Files App. In the Files app the sidebar tabs gets displayed but not the main content, i.e. his files do not appear on the screen and errors get displayed on the console.
Just to clarify, my files are showing fine and works great, but not on his system.
Errors are attached herewith: