Feature description

When a validation error is raised, the editor currently lists out what the errors are without any indication of the theme/plugin that is responsible. Here I created a plugin called “Bad Shortcode” but there is no indication that this plugin is responsible here for the problem:

Aside: There should be a link from the warning in the block to the specific error(s) on the validated URL screen, with the validation error pre-expanded. See also #3821.

When navigating to review the issues on the validated URL screen, we do there indicate the theme/plugin responsible (here the “Bad Shortcode” plugin)

However, we do not provide any encouragement for the user to contact that theme/plugin's author for support. This should be done as the first step before the user reports the issue to the AMP plugin forum, which we seek to facilitate with #4664. If we can determine that the theme/plugin is on WordPress.org, we should directly link to the appropriate support forum.

Relates to #3821, #2673, #4480, #4664.

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Acceptance criteria

Implementation brief

QA testing instructions

Demo

Changelog entry