How can the error message "Warning: open(/tmp\sess_19f72ec423601a07a29c2172f2399c8d, O_RDWR) failed: m (2)" when trying to create a session with session_start() be resolved in PHP?

The error message "Warning: open(/tmp\sess_19f72ec423601a07a29c2172f2399c8d, O_RDWR) failed: m (2)" indicates a problem with the session save path or permissions. To resolve this issue, you can specify a custom session save path in your PHP configuration or adjust the permissions on the existing save path directory to allow read and write access.

// Specify a custom session save path
session_save_path("/custom/path/to/sessions");
session_start();