Why is my motor making so much noise when I use it

when I turn on my E-skateboard it seems fine but when I use the battery it makes this horrible noise, makes the skateboard go back and fourth when I don’t want it to, and finally it sometimes even keeps going after I stop it. My skateboard is a Hover-1 cruze electric skateboard and this is very troublesome.

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dirt, debris, malfunctioning, dying. take the unit apart and look for any damage.

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