I solved so:
Have you checked the wp-config.php file to see if the “Authentication Unique Keys and Salts” were generated? If so, I would either delete it, or to be safe temporarily comment it out. Basically, by disabling the authentication unique keys and salts, you are taking away that extra layer of login security for your site.
I would first try commenting out that entire code block starting from: “define(‘AUTH_KEY’, …)” to “define(‘NONCE_SALT’,…)”
Then save the file and try visiting your site again. You might have to login at least once after doing this, but after that you shouldn’t have to be required to login again after re-visiting your site.