Greetings Juan, Marianela, taking out the back cover of the washing machine, you will see it on the bottom right where the corrugated hose comes out of the drain is supported by two screws from the bottom side, greetings.
Regards, Ramoncircuito. Dear to make sure that it can be the pump, start it, when you see the drainage start lower the hose to the floor level and it drains by gravity too, that will help the pump to drain and work more comfortably and pay attention, if the error reappears, I would be more certain that it has winding problems. Regards