Page loaded over HTTPS but requested an insecure XMLHttpRequest endpoint

Question

I have a page with some D3 javascript on. This page sits within a HTTPS website, but the certificate is self-signed.

When I load the page, my D3 visualisations do no

Answer 1

I solved the problem adding a slash at the end of the requesting url

This way: '/data/180/' instead of: '/data/180'