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Like Tim said, you're trying to add a non-secure item to a secure page. If Moz aren't able to create a HTTPS version of the widget, I'd recommend viewing the source code of the widget and re-creating it on your page.

Also - I remember attending some AdWords and Analytics training classes with HBP with yourself some years ago Liam!

Hi Lana,

I've been having the same problem on one of our websites. I've been 301 redirecting over 5,000 URL's but still receive a lot of 404 errors. One of the main reasons for these 404 errors still appearing is other bots such as Bing Bot that is still crawling the old URL's.

To resolve this, I would just block them in your robots.txt file. We blocked our old product URL's that were under a "product directory like this:

User-agent: *
Disallow: /product/

A crawl of my websites has indicated that there are some 5XX server errors on my website:

Error Code 608: Page not Decodable as Specified Content Encoding
Error Code 803: Incomplete HTTP Response Received
Error Code 803: Incomplete HTTP Response Received
Error Code 608: Page not Decodable as Specified Content Encoding
Error Code 902: Network Errors Prevented Crawler from Contacting Server

The five pages in question are all in fact perfectly working pages and are returning HTTP 200 codes. Is this a problem with the Moz crawler?