Operating system: Windows 10
Graphics card: NVIDIA GeForce RTX 2080 Ti FE (x2)
Broken: 2.80 337eb8c1de4c
Short description of error
Importing glTF 2.0 file results in an error in gltf2_blender_mesh.py on line 135:
TypeError: '>=' not supported between instances of 'tuple' and 'int'
Exact steps for others to reproduce the error
I simply tried to import a glTF file that I exported from VRoidStudio.
I fixed it locally...
I noticed a nested 'for' loop around line 149 in gltf2_blender_mesh.py using the same variable 'i' as in the outer loop, and this 'i' appears to be clobbering the existing 'i'. Changing this inner loop to a different variable, like 'ind' (for index), resolved the error. (The mesh and armature doesn't load well, but it loads.)
I renamed the VRM file to GLB and zipped it here, so you can perform the same test: