When creating a pull request with a large number of commits, a description is autogenerated that can be quite large.  When a user tries to submit the pull request, they receive an error "Please enter a value between 1 and 32768 characters".  It is unclear what the error is referring to since it appears directly above the title, not the description, and the user hasn't entered any value (since it was autogenerated).

First, the description is optional, so it should say "between 0 and 32768 characters".

The error should indicate which field is causing the error, e.g. "The description must be no larger than 32768 characters."