Unable to Submit for Review

Unable to Submit for Review
The items below are required to start the review process:
An error has occurred. Try again later.


i have got above error when i am submit app for review. so provide me solution of this problem
Access: https://itunesconnect.apple.com/agreements/#/

Fill and accept the terms...
Unfortunately, bank details are now required
I'm waiting for my approval, I hope it resolves.
Are these agreements required even if the app is free?
Unable to Submit for Review
 
 
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