Trying to export rigged model to FBX. But it keeps spitting out weird errors I'm trying to export a low poly mesh and its rig as an FBX file. But when I hit export it spits out this error:
  File &quot;E:\Blender\2.83\scripts\addons\io_scene_fbx\__init__.py&quot;, line 634, in execute
    return export_fbx_bin.save(self, context, **keywords)
  File &quot;E:\Blender\2.83\scripts\addons\io_scene_fbx\export_fbx_bin.py&quot;, line 3198, in save
    ret = save_single(operator, context.scene, depsgraph, filepath, **kwargs_mod)
  File &quot;E:\Blender\2.83\scripts\addons\io_scene_fbx\export_fbx_bin.py&quot;, line 3094, in save_single
    fbx_objects_elements(root, scene_data)
  File &quot;E:\Blender\2.83\scripts\addons\io_scene_fbx\export_fbx_bin.py&quot;, line 2894, in fbx_objects_elements
    fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes)
  File &quot;E:\Blender\2.83\scripts\addons\io_scene_fbx\export_fbx_bin.py&quot;, line 1174, in fbx_data_mesh_elements
    elem_data_single_int32_array(lay_uv, b&quot;UVIndex&quot;, (uv2idx[uv_id] for uv_id in _uvtuples_gen(t_luv, t_lvidx)))
  File &quot;E:\Blender\2.83\scripts\addons\io_scene_fbx\fbx_utils.py&quot;, line 504, in elem_data_single_int32_array
    return _elem_data_single(elem, name, value, &quot;add_int32_array&quot;)
  File &quot;E:\Blender\2.83\scripts\addons\io_scene_fbx\fbx_utils.py&quot;, line 451, in _elem_data_single
    getattr(sub_elem, func_name)(value)
  File &quot;E:\Blender\2.83\scripts\addons\io_scene_fbx\encode_bin.py&quot;, line 161, in add_int32_array
    data = array.array(data_types.ARRAY_INT32, data)
  File &quot;E:\Blender\2.83\scripts\addons\io_scene_fbx\export_fbx_bin.py&quot;, line 1174, in &lt;genexpr&gt;
    elem_data_single_int32_array(lay_uv, b&quot;UVIndex&quot;, (uv2idx[uv_id] for uv_id in _uvtuples_gen(t_luv, t_lvidx)))
KeyError: ((nan, nan), 43)

location: &lt;unknown location&gt;:-1


I have tried reinstalling Blender
&lt;genexpr&gt;
    elem_data_single_int32_array(lay_uv, b&quot;UVIndex&quot;, (uv2idx[uv_id] for uv_id in _uvtuples_gen(t_luv, t_lvidx)))
KeyError: ((nan, nan), 43)

The first (bottom) error suggests there are errors in the UV map. Try recreating the UV map. The FBX export module requires a valid UV unwrapping for all vertices in the model. Go into the UV Unwrap tab and re-unwrap your model(s).