Support intro
Sorry to hear you’re facing problems 
help.nextcloud.com is for home/non-enterprise users. If you’re running a business, paid support can be accessed via portal.nextcloud.com where we can ensure your business keeps running smoothly.
In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 12.0.2): 14.0.4
Operating system and version (eg, Ubuntu 17.04): Alpine Linux 3.8.0
Apache or nginx version (eg, Apache 2.4.25): Nginx 1.14.1
PHP version (eg, 7.1): 7.2.12
The issue you are facing:
Security and setup warnings reports:
“Some files have not passed the integrity check.”
The following files are affected:
Technical information
=====================
The following list covers which files have failed the integrity check. Please read
the previous linked documentation to learn more about the errors and how to fix
them.
Results
=======
- files
- EXTRA_FILE
- .l10nignore
- comments
- EXTRA_FILE
- .l10nignore
- support
- EXTRA_FILE
- resources/Why the Nextcloud Subscription.pdf
- dav
- EXTRA_FILE
- lib/CalDAV/Outbox.php
- oauth2
- EXTRA_FILE
- .l10nignore
- notifications
- EXTRA_FILE
- .l10nignore
- files_versions
- EXTRA_FILE
- .l10nignore
- updatenotification
- EXTRA_FILE
- .l10nignore
Is this the first time you’ve seen this error? (Y/N): Y
The output of your Nextcloud log in Admin > Logging:
There’s no error logged related to this issue.
None of the files listed was available in Nextcloud 14.0.3.