Receiving an warning message and unable to upload any photos.

Warning: Unknown: open(/tmp/sess_bef4f4a6f9dc9c02065d338579f6acd8, O_RDWR) failed: Permission denied (13) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0