Takes too long to load and only showing white screen

[Blazeeeee]

Yesterday when i open the game its just white screen and takes too long to load but it suddenly opens but right now it doesnt load it's just a white screen and i waited almost 15 mins and still nothing happens. I guess this has something to do with chunk files. Can someone help me fix this problem or give me the original chunk0.arc and chunk0.def files because i didnt backup it. The problem started happening when i use cct to replace chunks i think. I cant redownload because my internet is slow. Thanks in advance