Pop up window opens blank and crashes

I’m having this issue with every game, but i was trying to install mtg arena.
When i click install from the website link, the lutris windows opens but stays blank, and then crashes and gives an error mesage “unable to install the game - no installer is available for this game”.
Oddly enough, a couple days back i installed League of Legends and it opened perfectly had no problem (and the game is working). Im using Ubuntu 18.04.
Sorry if it was already asked, I tried to look for someone with de same error and didn’t find