Go to Filament Load and while filament is loading, look at the back of SE.
Silver wheel should turn.
SE.jpg
This is where wheel is connected to the Carriage.
If it turns properly while Filament load, then you have issues with filament...
But if it doesn't turn, then of course your SE can't extrude filament.
Check back side off Carriage, similar wheel should be fitted into that part of SE.
There is very small screw on it, you can adjust it.