Upgrade from Nextcloud 11.00.4 to 12.0.1.5

OS: CentOS7
Apache: 2.4.6
PHP 5.6

I have execute the upgrade with the Webinterface, all was fine, but after click on the “back to Nextcloud” button I’ll only get an empty page. The database works. In the Apache error log I get some PHP warnings according to fileperms(), touch() fopen(), chmod(). It seems, that the upgrade has changed some permissions, where I can find the necessary file/folder permissions for Nextcloud 12?

Thanks.

755 for Directories, 644 for Files

find . -type d -exec chmod 755 {} ;
find . -type f -exec chmod 644 {} ;

Ahhh, seems to work! Thank you! It was 750 and 640…

750/640 should work

After:
tar -xjf nextcloud-x.y.z.tar.bz2
unzip nextcloud-x.y.z.zip

755/644 is default.