Internal server error

Application could not be started.

Exception type: Passenger::SystemException
Error message: Cannot create a temporary directory in the format of '/tmp/passenger-spawn-debug.XXX': No space left on device (errno=28)
Backtrace:
in 'void Passenger::SpawningKit::SmartSpawner::startPreloader()' (SmartSpawner.h:201) in 'virtual Passenger::SpawningKit::Result Passenger::SpawningKit::SmartSpawner::spawn(const Options&)' (SmartSpawner.h:779) in 'void Passenger::ApplicationPool2::Group::spawnThreadRealMain(const SpawnerPtr&, const Passenger::ApplicationPool2::Options&, unsigned int)' (SpawningAndRestarting.cpp:95)