Web viewers errors

[DanicaSTFC]

When executing the web viewer, and then uploading an image, it outputs the following errors and many more

  out.append(scaling * ((val - xmin) / dx))
Traceback (most recent call last):
  runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
runpy.py", line 87, in _run_code
    exec(code, run_globals)
  cilviewer_webapp\Scripts\web_cilviewer.exe\__main__.py", line 7, in <module>
ccpi\web_viewer\web_app.py", line 96, in main
    TRAME_VIEWER.start()
  ccpi\web_viewer\trame_viewer.py", line 94, in start
    server.start()
site-packages\trame_server\core.py", line 653, in start
    task = CoreServer.server_start(
site-packages\trame_server\protocol.py", line 50, in server_start
    return server.start_webserver(
site-packages\wslink\server.py", line 295, in start_webserver
    return exec_modes[exec_mode]()
site-packages\wslink\server.py", line 278, in main_exec
    loop.run_until_complete(create_coroutine())
cilviewer_webapp\lib\asyncio\base_events.py", line 642, in run_until_complete
    return future.result()
ite-packages\wslink\backends\aiohttp\__init__.py", line 114, in start
    port_callback(self.get_port())
site-packages\trame_server\protocol.py", line 93, in port_callback
    self.server.state.ready()
site-packages\trame_server\state.py", line 73, in ready
    self.flush()
site-packages\trame_server\state.py", line 246, in flush
    coroutine = callback(**self._pushed_state)
site-packages\ccpi\web_viewer\web_app.py", line 125, in change_model
    TRAME_VIEWER.load_file(kwargs['file_name'], kwargs.get('opacity', "scalar"))
site-packages\ccpi\web_viewer\trame_viewer3D.py", line 323, in load_file
    self.update_windowing_defaults(windowing_method)
site-packages\ccpi\web_viewer\trame_viewer3D.py", line 288, in update_windowing_defaults
    self.update_slice_data()
 \ccpi\web_viewer\trame_viewer.py", line 302, in update_slice_data
    self.slice_level_default = self.convert_value_to_percentage(self.cil_viewer.getSliceColorLevel())
  \ccpi\web_viewer\trame_viewer.py", line 414, in convert_value_to_percentage
    percentage = 100 * (value - self.cmin) / (self.cmax + self.cmin)
ZeroDivisionError: float division by zero