Magento 2.3 - Unexpected error Exception: Warning: SessionHandler::read()

Question

I am getting Unexpected error,

Exception: Warning: SessionHandler::read(): open(/var/opt/remi/php72/lib/php/session/sess_5292j25aa4ugpdgrv9r6a3l3p8, O_RDWR) failed: Permission denied (13) in /usr/share/nginx/html/gta/vendor/magento/framework/Session/SaveHandler/Native.php on line 22 in /usr/share/nginx/html/gta/vendor/magento/framework/App/ErrorHandler.php:61

How to solve the error?

Answer 1

Doesn't seems to be Magento related, but PHP related.

The error says Permission denied, so the user executing the PHP code can't write on the PHP session path.

As you mention nginx, I assume you're using php-fpm. Check your pool to see the user and group and verify if it matches the rights on the path /var/opt/remi/php72/lib/php/session

Sometimes it also happens when nginx is using the nginx user and not www-data user.