Search Console indicates there are errors in the index

Read the exact reason shown by Search Console for the affected URL. A page intentionally excluded by a noindex directive can appear among pages that are not indexed: this is expected if you do not want it to appear in Google.

noindex does not prevent Googlebot from accessing the page. Google must be able to crawl it to read the directive. A robots.txt block, server error or inaccessible page is a different situation and should be investigated separately.

If the exclusion is unintended, check the module rules, native indexing settings and other SEO modules. Then use URL Inspection and the live test to check the current page version; the report may still reflect an earlier crawl.

See how to verify noindex and Google’s Page indexing report documentation.