I can't understand why Mixed content?

Question

opencart

On the main page, the connection is protected, but when you go to the registration section, the connection is not completely protected, an error in the console

Answer 1

Fixed add-on for Opencart code format .xml
install via admin panel add-on
installation section

<?xml version="1.0" encoding="utf-8"?>
<modification>
    <name>FIX HTTPS</name>
    <version>2.3.8</version>
    <author>[email protected] | forum.opencart.pro/profile/185-yoda/</author>
    <code>fix_https</code>
    <link>http://opencartadmin.com</link>
    <file path="system/library/response.php" error="skip">
    <operation error="skip">
        <search><![CDATA[echo $output;]]></search>
        <add position="before"><![CDATA[
      if ((isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] == '1' || $_SERVER['HTTPS'])) || (!empty($_SERVER['HTTP_X_FORWARDED_PROTO']) && (strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) == 'https') || (!empty($_SERVER['HTTP_X_FORWARDED_SSL']) && $_SERVER['HTTP_X_FORWARDED_SSL'] == 'on'))) {
        $output = str_replace(HTTP_SERVER, HTTPS_SERVER, $output);
      } else {
        $output = str_replace(HTTPS_SERVER, HTTP_SERVER, $output);
      }
    ]]></add>
    </operation>
    </file>
    <file path="system/library/cache.php" error="skip">
    <operation error="skip">
        <search><![CDATA[class Cache {]]></search>
        <add position="after"><![CDATA[
private $ssl_protocol = 'http_';
    ]]></add>
    </operation>
    <operation error="skip">
        <search regex="true"><![CDATA[~public function __construct(.*?)\{~]]></search>
        <add position="replace"><![CDATA[
        public function __construct$1{
    if ((isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] == '1' || $_SERVER['HTTPS'])) || (!empty($_SERVER['HTTP_X_FORWARDED_PROTO']) && (strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) == 'https') || (!empty($_SERVER['HTTP_X_FORWARDED_SSL']) && $_SERVER['HTTP_X_FORWARDED_SSL'] == 'on'))) {
      $this->ssl_protocol = 'https_';
    }

    ]]></add>
    </operation>
    <operation error="skip">
        <search><![CDATA[return]]></search>
        <add position="before"><![CDATA[
    $key = $this->ssl_protocol.$key;
    ]]></add>
    </operation>
    </file>
</modification>