Unable to log with my character

Hi,

I put mtx on my shield on my new character in league, the game lag out and now each time I try to log with this character le game crash... With my other character no problem, game load and i can play.

I need to restart a new character and loose all the progress??

Edit : It's the poltergeist skin for the shield.

here, the same problem

Same exact problem here, crashed on applying poltergeist skin for the shield. Now crashing after selecting character.

Edit: I created a new character, played it just enough to get a shield, applied cosmetic to the shield to reclaim it and then crashed. Then logged to my original character.

Today's hotfix resolved this.