I've tried to cached our checkout page and it looks like it works, but when we try to update the template, we can't save it.
There is an error in the chrome/safari console.
The XSS Auditor refused to execute a script in 'https://admin.foxycart.com/admin.php'
because its source code was found within the request. The auditor was enabled as the server sent neither an 'X-XSS-Protection' nor 'Content-Security-Policy' header.
Is there something we're missing, we already had a checkout template and we're using the same type of structure, with a bit more of custom css. but besides that we haven't changed the code we've been using.
UPDATE: I removed the google analytics code.
And now it's saving the checkout but
A reference to a non secure css file was found:
Please take a look at our automatic template caching documentation for more info.Your template has been saved, but your customers will see insecure content warnings. Please set the template url and cache your template which will rewrite all HTTP references to HTTPS.
I thought, this was cached automatically.