Game wont load

[Moodas]

I'm using impact 1.15.2 and my game won't load I can't get a screen shot sorry

[Artemis13-ai]

in the .minecraft folder, copy the 1.15.2.jar file to the impact folder for that version, then rename the .jar file to the filename in the error (at the end of the file path). Worked for me and many others. Hope this helps.