[BUG] fresh installed version

[nixmomo]

Describe the bug
First, a fresh installed webinterface is outdated and needs to be updated first.
Second. After Installing easy-wi webinterface and gameserver with your script, and added it the gameserver to webinterface, i try to install a game server but the serverlist is empty and i cant install anything
To Reproduce
Steps to reproduce the behavior:
follow your install instructions

Expected behavior
a working webinterface with possibility to add gameserver apps

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

[AEon-Jan]

Did you installed a game on the master first?

[AEon-Jan]

Use the ADD Button to add a game ...

[nixmomo]

hmm ok i have not... how get i fixed this json issue?

[nixmomo]

Any Hints about this json error?

i tried a fresh install on a new server and its still the same, i get always this json error message. Not possible to install master Apps

[AEon-Jan]

No reply on #1325 - So it is considered solved

[Ballaual]

Issue still present! Fresh install (manually current dev version) on php8.2