fix 302 redirection error on https

First, you should not customize anything between # BEGIN WordPress and # END WordPress, it’s just not a good practice. You should add your own rules above WP rules. And you should also make use of some flags, like “L”.

# BEGIN Custom
<IfModule mod_rewrite.c>
Options All -Indexes
RewriteEngine On
RewriteBase /
RewriteCond %{HTTPS} !on
RewriteRule (.*) https://%{HTTP_HOST}/$1 [NC,R=301,L]
</IfModule>

# END Custom

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

Also, instead of defining WP site URL through admin you should define it using constants in wp-config.php. Here is a snippet you could make use of:

$protocol = ! empty( $_SERVER['HTTPS'] ) ? 'https://' : 'http://';

define( 'WP_HOME', $protocol . 'yoursite.com' );
define( 'WP_SITEURL', WP_HOME );

For more info: https://codex.wordpress.org/Changing_The_Site_URL

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