As said on the title, whenever I log to my admin page in Wordpress I get this notice in console:
Mixed Content: The page at 'https://site-url' was loaded over HTTPS, but requested an insecure favicon 'http://site-url/wp-content/uploads/2017/06/cropped-cropped-logo-square-192x192.png'. This content should also be served over HTTPS.
Also, I tried to load another favicon using Appearance->Customize, but it is still loaded over HTTP. Is this a Wordpress bug? or how can I solve this so this warning does not appear?