BuggaNoia, that looks like you unzipped latest version into the folder of your old version? Because that error is showing gloun.__init__.py file from version 2.058.x. Two versions are messed up and can not work. Never overwrite old r2la folder with new one.
You need to unzip rF2 Log Analyzer ver. 2.1.000 folder separately and start new r2la from scratch.
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Using v2.1 at the moment, installing redistributables from your link worked, server started, however in my rF2 setup I don't have a player folder (or player.json), I've renamed it to Server1 and r2la doesn't like that;Is this happening with r2la v.2.1.000 only or with older version also?
Try (re)installing "Visual C++ Redistributable for Visual Studio 2015" from this page - https://www.microsoft.com/en-gb/download/details.aspx?id=48145
After updating to the latest version, 2.1.001, everything started up and worked normally. Odd, but then I'm never surprised when rF2 is involved!I don't have win11, so I can not check. Check the usual suspects: firewalls, antiviruses, etc. Maybe try some other port.
web2py.exe -i a.b.c.d -p yyyy -a password --nogui
Example : web2py.exe -i 192.168.1.150 -p 80 --nogui