Okay, I had an issue installing Visio List using encrypted website where it does not show a lock. Google considered it , Not secure.
My shared host reseller www.A2hosting.com sent this solution which appears to work for domain www.Tapachula.info which is using a "Lets Encrypt" free SSL certificate, there are probably other methods but this appears to work.
For Apache web servers on Linux, add the following lines to the .htaccess file (or files) that you use on your website, which I did using notepad++ from www.ninite.com :
######## upgrades insecure requests such as toyour jpg files
<IfModule mod_headers.c>
Header always set Content-Security-Policy "upgrade-insecure-requests;"
</IfModule>
My shared host reseller www.A2hosting.com sent this solution which appears to work for domain www.Tapachula.info which is using a "Lets Encrypt" free SSL certificate, there are probably other methods but this appears to work.
For Apache web servers on Linux, add the following lines to the .htaccess file (or files) that you use on your website, which I did using notepad++ from www.ninite.com :
######## upgrades insecure requests such as toyour jpg files
<IfModule mod_headers.c>
Header always set Content-Security-Policy "upgrade-insecure-requests;"
</IfModule>