The Phusion Passenger(R) application server tried to start the web application. In doing so, Passenger had to first start an internal helper tool called the "preloader". But Passenger encountered an operating system error while performing this preparation work.

The error reported by the operating system is:

Cannot create a temporary directory in the format of '/tmp/passenger.spawn.XXXXEFAlEb': No space left on device (errno=28)
     in 'void Passenger::SpawningKit::HandshakePrepare::createWorkDir()' (Prepare.h:125)
     in 'Passenger::SpawningKit::HandshakePrepare& Passenger::SpawningKit::HandshakePrepare::execute()' (Prepare.h:558)
     in 'void Passenger::SpawningKit::SmartSpawner::internalStartPreloader(Passenger::SpawningKit::Config&, Passenger::SpawningKit::HandshakeSession&, const Passenger::Json::Value&)' (SmartSpawner.h:345)
     in 'void Passenger::SpawningKit::SmartSpawner::startPreloader()' (SmartSpawner.h:310)
     in 'virtual Passenger::SpawningKit::Result Passenger::SpawningKit::SmartSpawner::spawn(const AppPoolOptions&)' (SmartSpawner.h:1281)
     in 'void Passenger::ApplicationPool2::Group::spawnThreadRealMain(const SpawnerPtr&, const Passenger::ApplicationPool2::Options&, unsigned int)' (SpawningAndRestarting.cpp:95)

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