I got message from search console like below: show me path to fixed this issue.
To the owner of example.com:
Search Console has identified that your site is affected by 1 Q&A structured data issue(s). The following issues were found on your site.
Missing field "text" (in "mainEntity")
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.