MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.

Warning: file_put_contents(/tmp/klnpjcch5lrfd9kcj0kt5d6keh): failed to open stream: No space left on device in Unknown on line 0

Warning: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/session) in Unknown on line 0