"Too many redirects" (ERR_TOO_MANY_REDIRECTS)

The website redirects in a loop, often because of duplicate HTTPS or www rules.

1. Clear the website's cookies in your browser.
2. Check the redirect rules in .htaccess and in cPanel › Redirects (keep only one).
3. On WordPress, the site address (Settings › General) must exactly match the forced address (with or without www, with https).