Answer not submitting

In some problems, it shows " Whoops! We seem to have hit a snag. Please try again later…"

How to solve this problem?

কোন কোন প্রব্লেমে এইটা দেখাচ্ছে?

আমার ক্ষেত্রে হচ্ছে না

Try again or in a minute. This happens when your submission gets marked as a bot attack or something like that.