Unable to add new taxonomy when editing/adding collection entries

[manda-ikaink]

Describe the issue

When editing or adding a collection entry there are a series of errors that come up while attemting to add a new taxonomy on the fly.

Screenshots

Version and browser

Version: Master

Bug report checklist

• I have filled out as much information as I can
• I have detailed how the issue can be reproduced
• I have searched for existing issues and to the best of my knowledge this is not a duplicate