what is the problem can tell me fast
My prediction for hardwork challange not submitting
Hey @rakshit20141970, make sure you are making prediction on test file, also it should follow the sample submission format. If error persists than share your ipynb after saving it on google drive and sharing the link.
HOpe this resolved your doubt.
Plz mark the doubt as resolved in my doubts section. 
this is the file whick i want to submit
Hey @rakshit20141970, your csv scored 97%. There is some issue with the backend, i had to test your file on my system. Online grader system is not working as if for now, try after 24 hrs, we are working on it.
Hope this resolved your doubt.
Plz mark the doubt as resolved in my doubts section.
ok thanks for helping