How to revolve this model?

Hello,

I am totally new using this software and looking for anyone's help to revolve my model.

I did an insulator model using Autocad and imported into Solidwork,

I failed to revolve my model and there was prompt message came out saying that sketch is open,self-intersecting or intersect the centerline.

I tried to split the drawing, but the message still came out.

Can anyone please advise me for this matter.

Many thanks

Regards,

Hafisoh

SolidworksParts And Features