Don’t know how you integrate Vimeo ashburnham, but you could (should) treat this as just another configuration-issue, identifying the Vimeo-related JS and excluding that from optimization.
If you can share your URL here, I’ll be happy to have a quick look.
Have fun,
frank
I actually only have one vimeo link on my entire site that is on our Drone Insurance page here:
https://www.ashburnham-insurance.co.uk/blog/2015/08/do-i-need-drone-insurance-for-my-uav-business/
but I use an plugin that I believe is correcting the http to https on the fly so all appears fine to the user. The error may still exist though and may be affecting other users so worth a look?
The error I get from my mixed content checker flags multiple files. Here is one example:
https://www.ashburnham-insurance.co.uk/wordpress/wp-content/cache/autoptimize/js/autoptimize_ef9381c2344eaea61b12111aa5b7b5bd.js
and they all say http://player.vimeo.com/video/ that is found in this file should be corrected to https.
well, autoptimize simply aggregates all JS (and CSS) it finds on your site. in this case the vimeo http-link is actually in https://www.ashburnham-insurance.co.uk/wordpress/wp-content/themes/rttheme18/js/video_player/mediaelement-and-player.min.js?ver=4.5 so that is not something AO could/ should change.
when looking at the page, the vimeo video is loaded over HTTPS;
<iframe src="https://player.vimeo.com/video/121601638" allowfullscreen="allowfullscreen" frameborder="0" height="281" width="500"></iframe>
so no problem there either.
So the question becomes; is this a false positive, or is there (another) real mixed content problem on your site?
frank
It seems this error message then is related to my theme and not autoptimize. I shall take it up with them then!
Just to clarify, wasn’t experiencing any end user issues but a checker pointed this out as an issue that would kick in if one of my plugins was deactivated so wanted to make sure the creator of the plugin (or now theme as it seems!) knows about it.
Thank you very much, really appreciate your help Frank.