Location: Creating Location with Duplicate Name Results in Ugly Error

Steps to Reproduce:

1. Log into http://folio-snapshot.aws.indexdata.com as diku_admin
2. Go to Settings > Tenant > Locations
3. Create a new location with the same name as an existing location (I used Annex)
4. Note there is a red validation message under the name field stating that the "Location name must be unique" (this is good)
5. Populate all other required fields
6. Attempt save of the new location (click "create location" button)

Expected Results: When location name is not unique,
1. Save should be prevented and no ugly error should display (server error shouldn't be needed here because there is the red validation error displaying under the field)
2. The red validation error should continue to display until a unique location name is entered

Actual Results:
1. Ugly server error displays on Save attempt
2. Closing out of the error and returning to the page causes the red validation error to disappear AND the primary service point selection clears out (sometimes)
3. Moving focus out of the Name field sometimes causes the red validation error to disappear when name is still not unique

Screenshot: