crash issue

[Narc0T1c]

Hello so im trying to connect to pixelmon 1.12.2 with it with the forge and when i press to join the server the screen goes black and it gives me this https://gyazo.com/e4afdb9e2cf344edc225a702ae9a2c8c can i get any help please

[Dyiing]

We don't support cracked launchers. It's probably a mod conflict