Immediately die when loading game

I tried searching but didn't already find this issue, so sorry if I'm repeating this. 

Ever since the new update I die immediately when my game has loaded and I don't recognize where I have died. I know my brother, who also plays on the Nintendo Switch and with the same version as me, had the same problem. 

Please help ASAP because I'm very upset that I keep losing levels and important items and I'm tired of wasting resources on making more.