From Lucee admin, most of the forms don't have the proper validation. For example, In mappings leave all field as empty, click the save button then form was submitted with the empty values & didn't give instruction for the user to give the values.
I've added a fix for this ticket. On the admin side, some of the pages have missed the form validation for the input field. So I've added the alert message for form fields that's in the resources-rest page, password page, and services-update page. On the page of services-update, disabled the execute button when version type is not selected & also throw an error message as "Please Choose any version" when a version is not selected from the dropdown. And, I've added some validation in Custom Update Provider.
Pull Request: https://github.com/lucee/Lucee/pull/730