What could be causing the "No space left on device" error in PHP sessions?

The "No space left on device" error in PHP sessions typically occurs when the server's disk space is full, preventing PHP from writing session data to disk. To solve this issue, you can either free up disk space on the server or change the session save path to a location with more available space. 

// Set a custom session save path with plenty of available space
session_save_path('/path/to/custom/session/dir');

Keywords

PHP sessions error "No space left on device" storage

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