With this particular model, Prusaslicer is very optimistic about bridging and support generation:
- the right side (dark blue) has no support that could help with load-bearing
- the entire layer will be connected to those two lines
- more than 5cm long bridges
I don’t think this gcode will successfully print.
How do fix adjust the cura setting to generate a printable output?
The model in question is: https://www.delta-fan.com/Download/3D/BUB0612HJ-00.stp
I would put the model in CAD and make it solid using a couple of booleans. FreeCAD can convert a mesh to a solid in the Part workbench.