Hey, sorry for not replying earlier!
Could you upload the save files (both the character and world file) in a .zip file to the forums? You can find the save files in %APPDATA%/Secrets of Grindea! Your first slot is named 0.cha and 0.wld, and so on.
I can then take a look at what went wrong, and also repair the save file and upload it here so you can progress!