Trying to export a model I created in Part Design to an STL file for 3D printing. I've looked through the documentation, eduspace, and these forums but no luck.

Things I've tried:
- Opening the model in 3D Printing and clicking Export > STL file… . This option only appears under the export menu when I open the model in 3D Printing, in Part Design all I can see is Knowledge Report. Clicking it opens the menu shown in the first image, in which it is impossible to select anything. If I select the 3D shape or the part in the tree on the left, a yellow box appears saying that the object cannot be exported.

- Clicking the Export button without expanding it in Part Design. This returns the errors shown in the second image.

- Opening the model in Product Structure Explore and clicking Tools > Export > Export As. This results in the error shown in the third image.

I have a student subscription to CATIA/3DExperience. I have tried all of these things using every role available to me (Leader and Owner).

Edu ​​​​​​​Part Design Eduspace 3DPrinting ​​​​​​​