filament - No extrusion, but manual extrusion works - 3D Printing Stack Exchange

I just bought and build my first 3d printer (HE3D K280 with Marlin) and I'm encountering some problems with Cura 4 and Repetier. When I load and slice a part, the printer does not extrude anything

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filament - No extrusion, but manual extrusion works - 3D Printing Stack Exchange

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ultimaker cura - 3D Printer does not print whole object - 3D Printing Stack Exchange

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