Recently I tried to perform a cut-extrude operation on a sketch segment of my pelvis part of a humanoid robot. However, the feature could not be created due to zero-thickness geometry, as stated in the error. I have no idea why this is the case. No edges are intersecting with zero thickness, none that I notice. Here is an image of the error itself:
Attached below is my assembly packaged. Any help would be very much appreciated.