@viktor77796, That is a weird error, sorry I don’t really know how to help.
Are you using Linux Ubuntu server, or the gui version?
I managed to install it successfully earlier this year (2022) with this same guide, but used Linux 18 LTS server, without the GUI, not sure if it makes a difference. I’m assuming it shouldn’t but I read somewhere that it may work better, hence tried it and it worked fairly easily. I also failed on the GUI Ubuntu version though. Let us know if you succeed.