Heart-shaped cactus pen holder

It is a heart-shaped cactus pen holder. It is my first design, I sliced it in Ultimaker Cura because it did not work in PrusaSlicer, I have not tested it in another slicer. If somebody with more experience could please tell me why it does not work in PrusaSlicer I would really appreciate it. It is modelled in blender.

Material: PLA

Layer height: 0.3mm, you can print it with 0.2 if you wish, but I do not mind the layer lines

Brim: yes

Raft: no

Supports: yes