Hi All, Firstly, thanks everyone for the great work. We are testing Dash and we had it up and running but started receiving this error after our upgrade to Dash 0.18.1. AssertionError: View function mapping is overwriting an existing endpoint function: serve_layout Code that replicates from stan…

What version of the dash components are you using? The recommended versions are list below: pip install dash==0.18.1 # The core dash backend pip install dash-renderer==0.9.0 # The dash front-end pip install dash-html-components==0.7.0 # HTML components pip install dash-core-components==0.12.4…

Hi Kfyao, Yes. Good question. Edited my post with requirements.txt. Here is what I am running: dash==0.18.1 dash-core-components==0.12.4 dash-html-components==0.7.0 dash-renderer==0.9.0 plotly==2.0.15 The error is produced with these versions.

Its also interesting to note that if I comment out one of the app imports (so only import a single app for serving) the applications works great. This works: run.py from server import server import app1 #import app2 if __name__ == '__main__': server.run(debug=True)

You may want to check out this https://github.com/plotly/dash/pull/70/commits/b58ca7f6fb5ae52cd7289dc28ae2437afc71d39b It seems this patch regarding multiple app has not been released to public

Hmm. So I saw that this patch was merged with master and so I pulled the latest dash 0.18.2 but now have other issues… So now no matter what url route is passed to browser dash renders the last app that was imported in the run.py file. Not sure if the Flask approach is the way to go with Dash. th…

I have published a preliminary fix in the pre-release channel: pip install dash==0.18.3rc1. Let me know if this works for you!

That worked. Thanks for all your hard work. Very impressive project.

Flask Endpoint Error

Dash Python

chriddyp September 8, 2017, 6:33pm 7

Thanks for reporting @joe! I’m working on a fix today.

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Flask Endpoint Error

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