class PhusionPassenger::AppInitError

SystemExit.
If the application called exit, then child_exception is an instance of
because the application either threw an exception or called exit.
ClassicRails::FrameworkSpawner or SpawnManager was unable to spawn an application,
Raised when Rack::ApplicationSpawner, ClassicRails::ApplicationSpawner,

def initialize(message, child_exception = nil, app_type = "rails", stderr = nil) 

def initialize(message, child_exception = nil, app_type = "rails", stderr = nil)
	super(message, child_exception)
	@app_type = app_type
	@stderr = stderr
end