How do I use the circular pattern feature properly?

Hi!

I am trying to use the cirular pattern feature to make this single spoke be repeated around the centre axis with 5 instances, but having no luck.

I keep getting the error "could not attach patterned faces to the solid to form a closed body".

I may have made the part in a strange way, but have limited knowledge of slidworks. Any better methods to forming this would be great!

Any help greatly appreciated!

Cheers

Jared

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