[Bug] Cannot do Aira's Oculus on one character

I have 5 characters in Punika, but specifically, my Artillerist is unable to go into Hard Mode Aira’s Oculus. Entering will immediately close my game during the loading menu, and I will not be able to log back in unless the raid has ended or closed. I was lucky to be doing this with friends who ended the raid so it would not waste my Rewards, but the next day I tried matchmaking again by myself, but the same issue occurs, only on ONE character.

Edit: Can do every dungeon on every character including the Artillerist just fine, only Aira’s Oculus is not letting me.