Crawl errors are normal, but they should be rare. Console surfaces them per site so you can act fast.
4xx and 5xx
A 404 means the URL moved or was deleted. A 5xx means your server is failing — check load and timeouts. Both are shown with response times in the live crawl view.
Sitemap issues
If your sitemap fails to parse, verify it is valid XML and not gzipped incorrectly. Console reports the exact error.
Verification problems
If the meta tag check fails, make sure the tag is in your homepage and the page returns 200.