Fueling will only take 1 gallen and pump shuts off on 2004 Subaru Forester

when fueling gas station pump shuts off after 1 gallen.

Asked by for the 2004 Subaru Forester
Vapor Canister vent hose goes into a frame-mounted manifold. Follow the hose to the manifold. remove the bolt & pull the palm-sized manifold. Remove the spider web & eggs ! Replace manifold & gas up...