link[rel=canonical] being added on the page when one is already present

Hello @jlott33

I am sorry about the issue you are experiencing and I am happy to assist you with this.
In Performance>Extensions, there is an AMP extension. Can you please enable it and see if the issue persists?
Also, I can see that you are using Cloudflare. Is that enabled via W3 Total Cache?
thank you!

Hello, yes both are enabled in extensions. They were both enabled before I had the issue.

Hello @jlott33

Thank you for the information.
Can you please disable W3 Total Cache settings one by one in Performance>General settings, save and purge the cache after each and see which setting might be causing the issue.
Also, try to purge Cloudflare CDN and disable Cloudflare and see if the issue persists.
Thank you!

thanks for the quick response. I got to minify section, and unchecked the first box in the section that says enable, purged all cache, and my pages are passing validation with amp now. so I left minify mode to auto and left the section right above this unchecked. minify cache method is set to disk and everything under that is set to default. so minify will still work without the first box checked then, right? thanks again for your help!

Hello @jlott33

Thank you for the information. If you de-selected the enable box in Performance>General settings>minify sub-box that means that you have disabled minify completely.
Please re-enable minify, and save all settings.
Go to Performance>Minify and disable the settings one by one (Start with HTML minify then JS minify and CSS minify) save the settings and purge the cache after each change and see which option might be causing the issue.
Thank you!

hello, I am unable to disable one by one. I have the option for “minify (default)” or “html tidy” for each. there is no disable button for each individual html, js, css. I can only check or uncheck the enable box for all. then under minify mode there is “auto” or “manual”. however, if I choose manual, I am left with the same options.

js and css have more options in the dropdown than html does, but there are still no disable options for each individual.

when I go to w3 extensions>cloudfare: content processing I am able to disable minify options one by one. perhaps the issue is that minify sections were enabled both on cloudfare and w3. would leaving minify enabled via cloudfare be enough? I am not having validations issues with leaving minify enabled through cloudfare.

Hello @jlott33

Ah, so this is a conflict issue. If Cloudflare minify is enabled then you should keep W3 Total Cache minify disabled.
So you should choose between W3 Total Cache minify and Cloudflare minify. If everything is working as expected with Cloudflare minify as you said, you should keep it enabled and W3 Total Cache minify disabled.
Thank you!

Ok that makes sense. Thanks so much for your help!