The script based on Laravel does not work for me. After the installer, there is a white screen on all pages [closed]

I have a Laravel-based casino script, but I can't run it properly on Ubuntu with the ISPmanager control panel. I've never encountered Laravel either. I've mostly researched WAP scripts before. I will send a link to the script to explore it from the public domain. Who can help and see what the problem is, I've already been digging into Apache, PHP, Laravel logs all the time with a white screen. Maybe what else besides the lightweight installer needs to be configured?

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I try all the methods for 5 days