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Has anyone checked the crwal anamoly issue under the index section on Search console? We recently move to a new site and I'm seeing a huge list of excluded urls which are classified as crawl anamoly (they all lead to 404 page). Does anyone know that if we need to 301 redirect all the links? Is there any other smarter/ more efficiently way to deal with them like set up canonical link (I thought that's what they're used for isn't it?)

Thanks!

I'm getting a lot of domain/index.html urls on my site which I didn't create initially. We recently transfered to a new site so those links could come from the old site. Does any know how to get a comprehensive list of all the urls that lead to 404?