I can't figure out why electrolyte won't flow anymore. It only says "output full"

Pardon the scuffed build. I've been encountering issues with fluids lately and this is the latest example I've been unable to solve. The machine says "output full" and no electrolyte goes into the storage tank. I tried removing and replacing all the pipes and machines and the pump in case another fluid was somehow stuck in there, but that did not fix it. I'm kinda at a loss.

Pardon the scuffed build. I've been encountering issues with fluids lately and this is the latest example I've been unable to solve. The machine says "output full" and no electrolyte goes into the storage tank. I tried removing and replacing all the pipes and machines and the pump in case another fluid was somehow stuck in there, but that did not fix it. I'm kinda at a loss.