ROM Hack Question Pokemon sword black screen at launch

[Portal2player56]

I need help. My copy of pokemon sword was working fine all the way till I got into post game after the end credits and restarting the game it just has a black screen with sound how do I fix it? (Yes I used pkhex to give myself a few pokemon but that shouldn't be the problem as it ran just fine all the way up to entering post game)

 

[masagrator]

I need help. My copy of pokemon sword was working fine all the way till I got into post game after the end credits and restarting the game it just has a black screen with sound how do I fix it? (Yes I used pkhex to give myself a few pokemon but that shouldn't be the problem as it ran just fine all the way up to entering post game)

This means nothing. You could edit something that is conflicting only in post-game.