Yii Toolbar triggering mixed content warning in CP I've enabled Show the debug toolbar on the Control Panel in my Craft Admin account in a local development environment that uses SSL. As soon as I enable it, I get the following error each time I load any page in the CP:

VM1685:1 Mixed Content: The page at 'https://domain.dev/admin/myaccount' was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint 'http://craft3.dev/actions/debug/default/toolbar?tag=5a495cbcf3e15'. This request has been blocked; the content must be served over HTTPS.


SSL seems to be set up and working fine. I have the siteUrl variable in my general.php set up with an https url as well:

'siteUrl' =&gt; 'https://domain.dev',


What could be triggering this warning?
On a multi-site setup, you need to use the multi-site array syntax for the siteUrl config setting like so:

'siteUrl' =&gt; [
    'siteHandle1' =&gt; 'https://foo.com/',
    'siteHandle2' =&gt; 'https://bar.com/',
],