error/moodle/error question answers missing in db

This could mean that you have a question in your quiz or dataset that is not restoring properly. According to MDL-34812, question text which has been pasted from MS Word might be a cause of this.

Possible solutions

1. Restore the questions manually into your course and recreate the quiz.

1. Try copying system level questions into the course. Use the edit button and then click the Make copy button at the bottom of the page. Then try moving it. If that triggers an error, then you know which question is causing the problem.

Other notes

The file that is throwing this error is /backup/moodle2/restore_qtype_plugin.class.php around line 159.