On the XBOX ONE
Playing ALONE and COOP
Playing as DRIZZT

I play on XBOX ONE and when logging in recently (when choosing Drizzt, until then I was only playing with him...) I simply didn't find anything in my inventory. No weapons and armor, even the potions were reset... EVERYTHING is gone!!!!
My level (20), and consequently my moves and skills, were intact, but the rest disappeared and apparently the save seemed corrupted to me...
Could you help me understand what happened and if there is a solution?
Since this problem, I don't play the game anymore and I feel an absurd sadness, because I invested a lot of time and created a great love for the game. But that brought great sadness and disappointment.
Please is there any way to recover my save and/or my equipment?