3 shapes set to fill but they weren’t closed

[Lmcintyre2562 (Lisa McIntyre)]

I am new to Lasers and Lightburn. I purchased a file and it says 3 shapes were set to fill but weren’t closed. I have the black set to engrave and the red to cut.
Please tell me what to do.`

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[fred_dot_u (fred ungewitter)]

One method of locating these ghosts is to use the “Select Open Shapes set to fill”. Even if you believe that the then-selected shapes are closed, examine each one. Consider to use the “Auto-join” option and if that fails, selecting each shape in turn, using the node tool, you may be able to identify the open points of the shapes.

If this is not productive, consider to upload/attach your file here for evaluation.