Deploying JupyterDash in Google Collab, callbacks not functioning correctly

[Jvoytek9]

!pip install jupyter-dash
!pip install dash_uploader

app = JupyterDash(__name__)

app.config.suppress_callback_exceptions = True

du.configure_upload(app, r"C:\tmp\Uploads")

app.layout = html.Div([
                       
  html.Div(
    dcc.Graph(id="output-data-upload",
    config = {'toImageButtonOptions':
    {'width': None,
    'height': None,
    'format': 'png',
    'filename': 'Image_Graph'}
    })
  ),

  html.Div(
      du.Upload(
          id='dash-uploader',
          text='Drag or Drop file here',
          text_completed='Completed: ',
          pause_button=True,
          cancel_button=True,
          max_file_size=1e+9,  # 1gb
          filetypes=["mp4","mkv","avi"],
          upload_id=uuid.uuid1()
      ),
    id="upload-container"),

  html.Div(
      html.Button('Continue', id='continue', n_clicks=0,style={"display":"None"})
  ,style={"margin":"auto","position":"absolute","right":10,"bottom":10})

])

@app.callback(
    [Output('output-data-upload', 'figure'), Output('continue', 'style'), Output('upload-container', 'style')],
    [Input('dash-uploader', 'isCompleted'), Input('continue', 'n_clicks')],
    [State('dash-uploader', 'fileNames'), State('dash-uploader', 'upload_id')]
)
def update_output(iscompleted, conbut, list_of_contents, upload_id):
    print(upload_id)

app.run_server(mode="external", port=port, debug=True)

I am running a jupyter notebook file in google colab, and regardless of what I run inside of the callback function, I get a callback error:
Callback error updating output-data-upload.figure, continue.style, upload-container.style
This leads me to believe the callback function is not registering properly. I have tried reducing the callback function's inputs, outputs, and states to a minimum, but the error persists for me. I can see my graph online, but once I upload something, I get that error.

I am unsure if this is a bug or an error on my accord, but from what I search online this functionality should be enabled.

[Oreon94-TU]

I am also facing a similar situation. Did you solve this?

[Jvoytek9]

I am also facing a similar situation. Did you solve this?

Nope, ended up remaking my app in IPywidgets and using another file upload package. Running Dash in a colab file did not work at all for me.