Google Search Console index error" refers to issues or errors encountered by Google's Search Console tool while attempting to index or crawl a website's pages for inclusion in the Google search index. Google Search Console is a free tool provided by Google that allows website owners and webmasters to monitor and optimize their website's performance in Google's search results.

Indexing errors in Google Search Console can occur for various reasons, and they can prevent certain pages or content from being properly indexed or displayed in Google search results. Some common types of index errors include:

1. Blocked by robots.txt: The website's robots.txt file may be blocking Google from accessing certain pages.

2. Noindex tag: Pages may contain a meta tag or HTTP header directive instructing search engines not to index the content.

3. Canonicalization issues: Incorrect or conflicting canonical tags can cause indexing problems.

4. Page not found (404 error): Google may encounter pages that are not found (404 errors), preventing indexing.

5. Server errors (5xx): These are server-related errors that prevent Google from accessing and indexing the pages.

6. Redirect errors: Incorrect redirects or redirect chains can cause indexing issues.

7. Soft 404 errors: Pages that return a "not found" status but still contain content can cause confusion for Google's indexing.

To address these index errors and ensure proper indexing of your website, you'll need to identify the specific errors in Google Search Console, understand their causes, and take appropriate actions to resolve them. This may involve updating the robots.txt file, fixing meta tags, resolving server errors, handling redirects correctly, and ensuring proper canonicalization.