Bouncer says this makes no sense.

Warning: Unknown: open(/opt/bitnami/php/tmp/sess_heu722gu7m73pa3oe2h08s0p03, O_RDWR) failed: No space left on device (28) 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 (/opt/bitnami/php/tmp) in Unknown on line 0