Lost Advancemnts

I am not here only to report a bug but also asking for a way to fix this
Today I've been playing in my minecraft world normaly then closed it to go to study
When I came back to open the world I found out all my advancments were reset
I sent The /debug report file with this hopping you help me...
and please don't tell me I have to use /advancment for every single advancment because there's some not fully completed so what do I do?