Open
Description
If a user submits an invalid record from the form, for example, with 2 duplicated authors then the submit handler will crash here and the user will get a 500 error page.
Instead, we should validate the record early on here and don't submit if the record has some invalid content.
A generic error can be shown to the user alerting that there is a problem with the data and to report it to developers (or if it is worth the time spent, parse the validation error, and do something smarter on the UI side to show exactly the error.)