SEO optimization google search indexing error
Briefly

Having an improper canonical link that includes the index file name can cause crawling issues. The URL should generally be simplified to only include the root domain.
Successful indexing of a homepage often results from correctly configured URLs and minimal use of specific filenames in the canonical path. Many sites operate effectively with a root URL for indexing.
The presence of non-indexed pages can indicate either technical issues or lack of interest-based content. Consistently ensuring links and SEO structures are intact is vital for crawling success.
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