Danesz

Hello! We were playing Tekkit, then i detected serious fps drops (i was hosting on lan) so i decided to restart my pc. when i got back i couldn't see my old save, but the folder was in its place. I did every single thing that i found here, but nothing have solved my problem yet. I have a crash log that i've uploaded here: https://pastebin.com/nTVP7L4c