ErrorException [ 2 ]: mkdir(): No space left on device ~ SYSPATH/classes/kohana/log/file.php [ 57 ]

Fatal error: Uncaught exception 'ErrorException' with message 'mkdir(): No space left on device' in /var/www/divakartina/system/classes/kohana/log/file.php:57
Stack trace:
#0 [internal function]: Kohana_Core::error_handler(2, 'mkdir(): No spa...', '/var/www/divaka...', 57, Array)
#1 /var/www/divakartina/system/classes/kohana/log/file.php(57): mkdir('/var/www/divaka...', 1535)
#2 /var/www/divakartina/system/classes/kohana/log.php(183): Kohana_Log_File->write(Array)
#3 /var/www/divakartina/system/classes/kohana/session.php(371): Kohana_Log->write()
#4 [internal function]: Kohana_Session->write()
#5 {main}
  thrown in /var/www/divakartina/system/classes/kohana/log/file.php on line 57