« 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_6e79f5b98512bf22e3f1f34a8c359a4b, O_RDWR) failed: No space left on device (28)
Error type/ Nr.:	Warning - 2
File:	Unknown
Line:	0
Parser timing
MySQL:	0.0035 s	(0 Requests)
PHP:	0.1029 s
Total:	0.1064 s