Android only: net :: ERR_INSECURE_RESPONSE

Question

I have a web application that makes a lot of ajax calls and opens headers to allow cross domain.

Failed to load resource: net :: ERR_INSECURE_RESPONSE

I get this error in the console when I try to call Android devices. When I test Apple devices and browsers, it works fine.

My initial guess is that, although this only happens on Android, it is still a certificate issue, but I wanted to know why this only happens on Android, not on iOS and on the desktop.