Getting the error message "Steam Service Error"

[Spam removed, the user had the same login timings as the one who spammed an answer with an offside link below. Bit more effort dear spammers… -Spirit]

I’ve never encountered this error, but quick googling shows this

https://steamcommunity.com/discussions/forum/1/2579854400740513046/

I do not know if this really belongs in the ‘Quake’ discussions.