Backend error: Cannot resolve destination host

installed the game step by step according to the instructions, after starting the server I launch the launcher, a quick load with pictures of a PMC or a Jaeger takes place, after which there should be a window with the game menu, but an error appears with a timer Backend error: Cannot resolve destination host

tried to reinstall several times, ran as administrator, did not help

i got 0 iq, o create folder on desktop