Search Console indicates there are errors in the index

Once you have deindexed certain pages of your site using the "noindex" module, it is possible that Google Search Console will report that "coverage of the index" errors have been detected.

This is completely normal and is not a problem.

Search Console simply indicates that GoogleBot (Google's robot) cannot access certain pages of your site (those you have set to noindex with the module).

This is exactly the role of the module and the noindex function.

Therefore, there is no problem :)