ErrS07 appears on the computer screen.
Error message
Cannot execute this operation with an open or intersecting path. (ErrS07)
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Cause
An overlapping process (Weld, Divide, Remove Overlapped or Subtract) was executed on object including open paths or self-intersecting paths.
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Solutions
Edit the pattern by using path tool so that it does not self-intersect or close the outline of the shape.