How to remove mixed content on https site?

Question

htaccess

Site on WordPress via https, redirect is registered in htaccess as:
RewriteEngine On
RewriteCond %{SERVER_PORT} !^443$
RewriteCond %{REQUEST_URI} !^/robots.txt$
RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI } [R=301,L]

Mixed content comes out and refers to some /porpoiseant/nmash.js and banger.js, both of which are available via http, redirect and does not try.
Where they sit, I do not understand.
How to win?

Answer 1

I solved the issue by installing the Really Simple SSL plugin

Answer 2

well, find the link through the search and fix http to https

Answer 3

Your script from the picture pulls some other script over http, not https, so mixed.
Comb that script if it's yours.