Invalid CVocConf leads to 500 errors

What steps does it take to reproduce the issue?

Change the CVocConf setting with

curl -X PUT --upload-file cvoc-conf.json http://localhost:8080/api/admin/settings/:CVocConf

• When does this issue occur?

When updating the CVocConf settings
http://localhost:8080/api/admin/settings/:CVocConf

like explained in the guidelines:
curl -X PUT --upload-file cvoc-conf.json http://localhost:8080/api/admin/settings/:CVocConf

and an item in that json array is invalid (I guess it checks against the CVocConf.schema.json) the server stops working entirely redirecting to
500 - Internal Server Error - An unexpected error was encountered, no more information is available.

e.g. I removed the key: js-url

• Which page(s) does it occurs on?

dataverse main/index page

• What happens?

500 errors

• To whom does it occur (all users, curators, superusers)?

• What did you expect to happen?

The External Vocabulary script not running

Which version of Dataverse are you using?

v. 5.12.1 build 1122-cf90431

Reproduce the PUT request to /api/admin/settings/:CVocConf using a CVocConf JSON array with the js-url key removed, then trace validation against CVocConf.schema.json and the resulting server error. Done means invalid settings produce a controlled response while the main/index page remains available and the external vocabulary script does not run.