flask.app::ERROR::Exception on /_dash-update-component [POST]

Dash Python
1

Hi,
I have a dash app similar to the following setup:

import flask
import dash
import dash_bootstrap_components as dbc
import pathlib

PATH = pathlib.Path(__file__).parent.absolute()
ASSETS = PATH.joinpath('assets').resolve()

server = flask.Flask(__name__)
app = dash.Dash(__name__,
                server=server,
                assets_folder=ASSETS,
                external_stylesheets=[dbc.themes.BOOTSTRAP])
app.config.suppress_callback_exceptions = True

and the layout looks like:

_layout = html.Div(
                       children=[
                            dcc.Location(id='home-url', pathname='/home'),
                            html.Div(children=dashboard_header,
                                     id="header",
                                     className="flex-display",
                            ),
                            html.Div(id="output-clientside"),
                        ],
                       id="mainContainer",
                       style={"display": "flex", "flex-direction": "column"},
              )

I have nothing registered as callback function for output-clientside. I am not using it either as Input, Output, or Status but I am recieving error as below:

error
error1007×291 67.2 KB

It does not disturb my dashboard but it slows down the dashboard when loading and fills the log with the error. Any help is highly appreciated.

Environment:

  • Ubuntu 18.04.2 LTS
  • Python 3.7
  • Flask==1.0.3
  • Flask-Compress==1.4.0
  • Flask-SeaSurf==0.2.2
  • dash==1.9.1
  • dash-auth==1.3.2
  • dash-bootstrap-components==0.9.1
  • dash-core-components==1.8.1
  • dash-daq==0.4.0
  • dash-html-components==1.0.2
  • dash-renderer==1.2.4
  • dash-table==4.6.1
2

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