So I was downloading something off cydia and it seemed to be working fine, I left my phone alone to get some water and then next thing I know I come back and it seemed to be turned off. I figured it simply had crashed and would boot into safe mode. However when I opened cydia all my sources were gone. ALL OF THEM , I googled this but the solutions didn't seem to help, or I did them wrong. Anyone have any idea how to fix this?