Can not update app.php -> url value via staff dashboard about unit3d-community-edition

[HDVinnie]

You need to set correct permissions for the config directory and files within. that appears to be your issue. let me know how you make out.

[HDVinnie]

Change owner of storage, bootstrap and config laravel directories

cd /var/www/html <---or wherever UNIT3D is on your server.
sudo chown -R www-data: storage bootstrap config

[VerioPL]

It's absolutely the same effect

Edit: I used chown -R apache:apache /www/[domain]
Edit2: It is'not file permissions problem, editing other value to the same file app.php (for example title) worked correctly.

[HDVinnie]

Ok well if what I suggested above does not work then I am not sure I have done multiple installs and have never had this issue. But the error clearly shows it's a permissions error. I'm assuming you are not running this in production. So might I suggest trying to change the permissions of the config directory in all files within to 777. If that works which I don't recommend keeping it that way it confirms that it's a permissions error on your end.

[VerioPL]

I just used chmod 777 -R /www/[domain]/config and it's make still error. I checked also selinux but it is set in permissive mode.

[HDVinnie]

I will be home in 2 hours and will try to replicate this issue and find out what the issue is. So if I understand correctly you can edit other config files fine including the app.php config besides that one value for URL.

[VerioPL]

Please close that issue. I made error in virtualhost configuration (it was pointing wrong DirectoryRoot with another UNIT3D copy). Really sorry for my inconvenience.

[HDVinnie]

Not a problem. Glad it was solved.