The period began to see some answers by visitors by errors like the following picture
What is the cause and how do I fix this error
I am using version 1.7.2
Link page with problem
OK I have fixed the issue in the repo (will be in v1.7.3). In Admin > Posting, there is always a minimum answer/comment length of 1. Same for the question title which was also a problem.
It also removes the notice for any existing cases where the answer has no content.
Thanks for reporting!
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April 20, 2021: Q2A 1.8.6 released!