We can't install apps after changing LXC on server

[wegorz23]

Hi, we are fighting this for whole week 😞

After every try of update of any application we got now:

Sorry, you do not have permission for that!
1C133/9 The application you uploaded cannot be installed because it is not a valid application, the archive is corrupt or the file and directory permissions in /applications do not allow it.

We have got 777 chmode on every files.

We also have zip and other files (everything is on green when runnig help and diagnostic tools). Please help, we need to upgrade one critical aplications.

[bfarber]

There could be an issue with your temp directory configuration, or your applications folder (and/or subfolders/files) are not writable by the webserver user.

[wegorz23]

Where to search it? As I mentioned everything has 777, so Aplications, subfolders, files and tmp should also have it.

[bfarber]

If you are having trouble, you can submit a ticket and we can take a look. From here, I can only guess and throw out possibilities.