Page management - Generic error is shown when user attempts to create a page with empty name or URL

Tested as part of CMS7-7830, following scenario fails
1. Login the archetype as admin or editor
2. Navigate to Channel manager >> my project >> edit channel >> pages
3. Click on add new page
4. Do not fill in the URL or Title
5. Click on create page

Expected - Error saying that page or URL cannot be empty
Actual - A generic error is shown "A technical error has occurred" (refer screenshot)

In the console error is logged:
WARN http-bio-8080-exec-29 [AbstractConfigResource.logAndReturnServerError:183] java.lang.IllegalArgumentException: Node name can not be empty.

Another error seen in the log but not seen on second attempt to reproduce:
WARN http-bio-8080-exec-23 [AbstractConfigResource.logAndReturnServerError:183] javax.jcr.nodetype.ConstraintViolationException: no matching property definition found for

displayname
[