Install the specific Unity version recommended by the UniVRM documentation (usually a stable LTS version).
: Unity Hub, a compatible Unity version, and the UniVRM Package. Step-by-Step : Import : Drag your .glb file into the Unity Assets folder. convert glb to vrm
Add a skeleton before conversion. You can use Mixamo (Adobe’s free auto‑rigger) to generate a humanoid skeleton. Download the rigged model as FBX, then convert it to GLB in Blender. Install the specific Unity version recommended by the
Incorrect weight-painting or twisted bone assignments during the humanoid configuration stage. a compatible Unity version