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Cannot export FBX 2.90
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Description

System Information
Operating system: Win 10
Graphics card:

Blender Version
Broken: 2.90.0 2020-08-31 11:26
Worked: -

Short description of error

Im recently upgraded my blender from version 1.79 to 2.90
Made a simple low poly objects and some of these cannot let my export them as FBX

The next error is displayed when this happen:

Traceback (most recent call last):

File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\io_scene_fbx\__init__.py", line 636, in execute
  return export_fbx_bin.save(self, context, **keywords)
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3198, in save
  ret = save_single(operator, context.scene, depsgraph, filepath, **kwargs_mod)
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 3094, in save_single
  fbx_objects_elements(root, scene_data)
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 2894, in fbx_objects_elements
  fbx_data_mesh_elements(objects, me_obj, scene_data, done_meshes)
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1174, in fbx_data_mesh_elements
  elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv_id] for uv_id in _uvtuples_gen(t_luv, t_lvidx)))
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\io_scene_fbx\fbx_utils.py", line 504, in elem_data_single_int32_array
  return _elem_data_single(elem, name, value, "add_int32_array")
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\io_scene_fbx\fbx_utils.py", line 451, in _elem_data_single
  getattr(sub_elem, func_name)(value)
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\io_scene_fbx\encode_bin.py", line 161, in add_int32_array
  data = array.array(data_types.ARRAY_INT32, data)
File "C:\Program Files\Blender Foundation\Blender 2.90\2.90\scripts\addons\io_scene_fbx\export_fbx_bin.py", line 1174, in <genexpr>
  elem_data_single_int32_array(lay_uv, b"UVIndex", (uv2idx[uv_id] for uv_id in _uvtuples_gen(t_luv, t_lvidx)))

KeyError: ((nan, nan), 1)

location: <unknown location>:-1

Exact steps for others to reproduce the error

Open the .blend and try to export it as FBX