message: "dash_core_components was not found."

[Antexa]

When I try to reach the webpage I got the following error

Error loading layout

Error loading dependencies

On my Web browser I got the following error in the console log

Error: dash_core_components was not found.
Stack trace:
resolve@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:9:27215
i@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:9:28049
i@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:9:27789
i@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:9:27789
i@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:9:27789
value@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:9:8353
_renderValidatedComponentWithoutOwnerOrContext@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:13:10748
_renderValidatedComponent@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:13:10872
_updateRenderedComponent@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:13:10172
_performComponentUpdate@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:13:9973
updateComponent@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:13:9251
receiveComponent@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:13:8362
receiveComponent@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:19125
_updateRenderedComponent@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:13:10219
_performComponentUpdate@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:13:9973
updateComponent@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:13:9251
performUpdateIfNecessary@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:13:8578
performUpdateIfNecessary@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:19307
s@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:23342
perform@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:15:8934
perform@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:15:8934
perform@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:24406
T@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:24583
close@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:23982
closeAll@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:15:9522
perform@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:15:9014
perform@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:24406
T@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:24583
close@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:23982
closeAll@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:15:9522
perform@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:15:9014
perform@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:24406
T@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:24583
closeAll@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:15:9522
perform@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:15:9014
batchedUpdates@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:3912
u@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:23624
r@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:21389
enqueueSetState@https://unpkg.com/react-dom@15.4.2/dist/react-dom.min.js:14:22386
[6]</r.prototype.setState@https://unpkg.com/react@15.4.2/dist/react.min.js:12:7755
c/</r</a.prototype.handleChange@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:28:23503
f@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:9:4702
o/</</<@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:29:240
n/</</<@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:29:977
dispatch@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:29:1333
u/</</<@https://unpkg.com/dash-renderer@0.9.0/dash_renderer/bundle.js:2:22924
 bundle.js:2:23049

All the requirements seems to be already here

sudo pip install dash_core_components
Requirement already satisfied: dash_core_components in /usr/local/lib/python3.5/dist-packages
Requirement already satisfied: dash in /usr/local/lib/python3.5/dist-packages (from dash_core_components)
Requirement already satisfied: plotly in /usr/local/lib/python3.5/dist-packages (from dash->dash_core_components)
Requirement already satisfied: flask-seasurf in /usr/local/lib/python3.5/dist-packages (from dash->dash_core_components)
Requirement already satisfied: flask-compress in /usr/local/lib/python3.5/dist-packages (from dash->dash_core_components)
Requirement already satisfied: Flask>=0.12 in /usr/local/lib/python3.5/dist-packages (from dash->dash_core_components)
Requirement already satisfied: requests in /usr/local/lib/python3.5/dist-packages (from plotly->dash->dash_core_components)
Requirement already satisfied: nbformat>=4.2 in /usr/local/lib/python3.5/dist-packages (from plotly->dash->dash_core_components)
Requirement already satisfied: decorator>=4.0.6 in /usr/local/lib/python3.5/dist-packages (from plotly->dash->dash_core_components)
Requirement already satisfied: six in /usr/local/lib/python3.5/dist-packages (from plotly->dash->dash_core_components)
Requirement already satisfied: pytz in /usr/local/lib/python3.5/dist-packages (from plotly->dash->dash_core_components)
Requirement already satisfied: click>=2.0 in /usr/local/lib/python3.5/dist-packages (from Flask>=0.12->dash->dash_core_components)
Requirement already satisfied: itsdangerous>=0.21 in /usr/local/lib/python3.5/dist-packages (from Flask>=0.12->dash->dash_core_components)
Requirement already satisfied: Jinja2>=2.4 in /usr/local/lib/python3.5/dist-packages (from Flask>=0.12->dash->dash_core_components)
Requirement already satisfied: Werkzeug>=0.7 in /usr/local/lib/python3.5/dist-packages (from Flask>=0.12->dash->dash_core_components)
Requirement already satisfied: ipython-genutils in /usr/local/lib/python3.5/dist-packages (from nbformat>=4.2->plotly->dash->dash_core_components)
Requirement already satisfied: jupyter-core in /usr/local/lib/python3.5/dist-packages (from nbformat>=4.2->plotly->dash->dash_core_components)
Requirement already satisfied: traitlets>=4.1 in /usr/local/lib/python3.5/dist-packages (from nbformat>=4.2->plotly->dash->dash_core_components)
Requirement already satisfied: jsonschema!=2.5.0,>=2.4 in /usr/local/lib/python3.5/dist-packages (from nbformat>=4.2->plotly->dash->dash_core_components)
Requirement already satisfied: MarkupSafe>=0.23 in /usr/local/lib/python3.5/dist-packages (from Jinja2>=2.4->Flask>=0.12->dash->dash_core_components)

From the shell

python3 web.py
 * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 536-946-261
91.135.176.215 - - [04/Jan/2018 09:30:37] "GET / HTTP/1.1" 200 -
91.135.176.215 - - [04/Jan/2018 09:30:38] "GET /_dash-layout HTTP/1.1" 200 -
91.135.176.215 - - [04/Jan/2018 09:30:38] "GET /_dash-dependencies HTTP/1.1" 200 -
91.135.176.215 - - [04/Jan/2018 09:30:38] "POST /_dash-update-component HTTP/1.1" 200 -
91.135.176.215 - - [04/Jan/2018 09:30:39] "GET / HTTP/1.1" 200 -
91.135.176.215 - - [04/Jan/2018 09:30:39] "GET /_dash-layout HTTP/1.1" 200 -
91.135.176.215 - - [04/Jan/2018 09:30:39] "GET /_dash-dependencies HTTP/1.1" 200 -
91.135.176.215 - - [04/Jan/2018 09:30:40] "POST /_dash-update-component HTTP/1.1" 200 -

Nota : I move to :

#!/usr/bin/env python3 instead of python

Cheers

[Gab0]

hello @Antexa, japonicus works best on python3.6; still, this error seems unrelated to python version.
On this issue, the ad-blocker has been reported to cause errors like this. If it turns out its not your adblocker, plz consider reinstalling all dash/flask dependencies. If that doenst fix things, solution would be trying python3.6... cheers!

[Antexa]

Hi @Gab0

The trick was to simply update to dash-core-components==0.15.4.

Maybe add it to your requirement file

Cheers

[Gab0]

haha so much speculation... nice.