I have the error below, so it simply does not load the images. I did not find any references to what could cause this... any ideas or suggestions?
thanks

Uncaught SyntaxError: Invalid or unexpected token
at new Function (<anonymous>)
at Function.template (underscore.min.js?ver=1.13.7:2:15243)
at n.template (wp-util.min.js?ver=6.7.1:2:328)
at n.render (media-views.min.js?ver=6.7.1:2:26047)
at wp.Backbone.Subviews.<anonymous> (wp-backbone.min.js?ver=6.7.1:2:2142)
at underscore.min.js?ver=1.13.7:2:6363
at Function.N (underscore.min.js?ver=1.13.7:2:9419)
at wp.Backbone.Subviews._attach (wp-backbone.min.js?ver=6.7.1:2:2103)
at wp.Backbone.Subviews.set (wp-backbone.min.js?ver=6.7.1:2:884)
at wp.Backbone.Subviews.add (wp-backbone.min.js?ver=6.7.1:2:1001)

Do you have a sample URL it's happening at (or at least a description of where you go to see it)? I can see if it's something I can replicate it, but would need to know where exactly you are seeing it on your end.

It occurs in a post, when I go to insert the image.

Hello,I identified the error.
It was the update of the "Image Placeholders" plugin.
By deactivating the plugin, the image gallery was ok.

Note: When activating or deactivating various plugins, I get the message "Pro version installed, but not active. If you have a license, you can enter it here." in the App for Cloudflare®, meaning I need to activate it again.

Do you have a list of the plugins you have installed by chance? It sounds like something may be mucking with your WordPress options for whatever reason. I've tried activating and deactivating various plugins as a test and none of that made the license key go missing for me. When it happens, is it all the Cloudflare related settings, or just the license key?

Does he API token stay intact? Is the license key there, but you just need to click "Save Changes" on the settings page to re-enable the license?