Error in Coding Contest Page

I’m having error while opening the contest page on self-learning. I was practicing problems on arrays and suddenly when I gone back to the set of problem page I can’t fix this error. I tried re-logging many times cleared cache and cookies but can’t able to solve the error.

even when I’m trying to load the practice problem page its not opening the page showing a blank page
Can anyone please help me

@soumyojit_sen - is this the contest code / page you are referring to? it is opening for me - Contest Page | CodeChef. Please share the URL where you faced the error.