[REQUEST] Only import mesh objects when using "Import FBX" node

**Describe the bug**
Error and sometimes Blender crashes when importing an FBX file, then trying to select faces on it.

**To Reproduce**
Steps to reproduce the behavior:
1. Use an Import FBX node, with valid path, generate UVs
2. Connect to a Select all Node
3. Preview Select all Node
4. Error appears as in screenshot attached

**Expected behavior**
I'd expect that I'm able to select faces on the object as in Edit mode, and continue to manipulate the model

Other Notes:

These were not the first nodes I added, I was mid way through a project, which is attached
[ImportFbxError.zip](https://github.com/aachman98/Sorcar/files/4639018/ImportFbxError.zip)

Model I imported is very simple, it's also included

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Desktop (please complete the following information):**
- OS: Windows 10
- see attached system-info.txt for Blender version, sorcar version and everything else