Iām trying to host streamlit on Heroku but so far I havenāt been successful.
After a series of trial and error Iām launching my web dyno with (content of my Procfile): web: sh setup.sh && streamlit run some_script.py
Where setup.sh is
This setup script ensures that the port is properly set, that Iām running a headless server and that the boot process does not get stuck waiting for a valid email.
By running heroku logs --tail I see that streamlit as started correctly.
When I access https://my-streamlit-app-on-heroku.herokuapp.com/ I get a streamlitās empty landing page (with the burguer button on the top right, with a message next to it saying āconnectingā).
Eventually I get a popup error saying āConnection failed with status 0.ā
Any idea on what Iām might be doing wrong?
Thanks
Hi, Alexandre. I believe that this wonāt work because Heroku doesnāt currently support websockets, which Streamlit requires.
However, I donāt want to jump to conclusions because I wasnāt involved in the Streamlit + Heroku effort here. So I pinged some Streamlit engineers who worked on this to provide more details!
Please understand the delay as we get back to you.
I see most of the comments are from 2019, but if anyone trying to deploy on Heroku today make sure your requirements.txt file has streamlit version code. If not specified it keeps showing āConnecting to streamlitā when viewed through the link. Maybe a bug in the latest version.
2020-07-14T15:27:22.074324+00:00 heroku[web.1]: Starting process with command sh setup.sh && streamlit run app.py
2020-07-14T15:27:29.434867+00:00 heroku[web.1]: Process exited with status 134
2020-07-14T15:27:29.475031+00:00 heroku[web.1]: State changed from starting to crashed
2020-07-14T15:27:29.343638+00:00 app[web.1]:
2020-07-14T15:27:29.343681+00:00 app[web.1]: Telemetry: As an open source project, we collect usage statistics.
2020-07-14T15:27:29.343682+00:00 app[web.1]: We cannot see and do not store information contained in Streamlit apps.
2020-07-14T15:27:29.343682+00:00 app[web.1]:
2020-07-14T15:27:29.343682+00:00 app[web.1]: If youād like to opt out, add the following to ~/.streamlit/config.toml,
2020-07-14T15:27:29.343687+00:00 app[web.1]: creating that file if necessary:
2020-07-14T15:27:29.343687+00:00 app[web.1]:
2020-07-14T15:27:29.343688+00:00 app[web.1]: [browser]
2020-07-14T15:27:29.343692+00:00 app[web.1]: gatherUsageStats = false
2020-07-14T15:27:29.343693+00:00 app[web.1]:
2020-07-14T15:27:29.369552+00:00 app[web.1]: libgcc_s.so.1 must be installed for pthread_cancel to work
2020-07-14T15:27:36.000000+00:00 app[api]: Build succeeded
@Nikhil_Agarwal , kindly help to me solve the above issue as you mentioned followed same steps but giving same application error.
Hello! I am using streamlit==0.67.1, and I keep seeing this error message 'āConnection failed with status 0.ā. Even when running āstreamlit helloā I see this error. Iām not sure how to troubleshoot this, could someone assist? Iām using a virtual machine and I wasnāt seeing this error 3 weeks ago, but it has been happening for 2 weeks now.
@anasalu I had the same problem. Try Nikhilās solution above with the Streamlit version set to 0.49.0 and edit the setup.sh file to exlude any new line characters (\n). Also, if you copy the code, be sure that the quotation characters an non-directional (should be the default of your keyboard, so you might just have to retype those). If this doesnāt work, try including a runtime.txt file in your directory specifying the version of Python. My Streamlit app is working with python-3.7.5 in my runtime.txt file.
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