« MODx Parse Error »

MODx encountered the following error while attempting to parse the requested resource:
« PHP Parse Error »
PHP error debug
Error:	Unknown: open(/tmp/sess_67f2e7a5f4ccd5f0dd45c24a999ab5fd, O_RDWR) failed: No space left on device (28)
Error type/ Nr.:	Warning - 2
File:	Unknown
Line:	0
Parser timing
MySQL:	0.0060 s	(4 Requests)
PHP:	0.0913 s
Total:	0.0973 s