Locking up whenever i project to a body

Hello, I have been a recurring issue where every time I try to project a sketch on to my model the software locks up and shuts down. The file was originally designed in fusion 360, then exported as a .iges file to shapr3d. My PC is more than capable of running Shapr3d with a large file.
|Processor Intel(R) Core ™ i5-8500 CPU @ 3.00GHz 3.00 GHz|
|Installed RAM|16.0 GB (15.8 GB usable) |
|System type|64-bit operating system, x64-based processor|
|Pen and touch support with 10 touch points|
Virtual paging file 8 GB
Graphics eGPU Nvidia RTX 4060 ti 2850 mhz 8GB

The model is a solid body that is watertight, I have reduced the face count to (19,368) and repaired and remeshed the model before making it a solid body.
The sketch is supposed to be projected on to the back of the cat (will be a removable panel). I am a noob so I can’t add attachments yet but if I forgot something or you need more info, please ask I will provide. Thank you!