"your repl is having a bit of trouble"

so i think this is due to the main.py file because when I open it, it says that message and then i have to relog in to replit(and now I cant download the main.py either so i think it may have corrupted)and i have spent a lot of time on this, so it would be very sad(like 4 months of work gone)and idk what I can do

can anyone help?(please)