I should say this is giving extra information on paatโs post - I am having the same issue 
Posts
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RE: Installation ERROR: Fresh Install with current git trunk version.posted in FOG Problems
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RE: Installation ERROR: Fresh Install with current git trunk version.posted in FOG Problems
Tom poked around on my setup and found an error to push out - stay tuned for his update.

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RE: ...boot.php... Permission deniedposted in FOG Problems
@Sebastian-Roth I had the same symptoms that @jasonm had. I tried the resolution you put on May 6, 2020 and that worked to resolve my permission denied issue.