CODEWITHSUNDEEP
pythonpython-3.xplotly-dash
Suraj
Suraj

Reputation: 2477

Contents of dashboard are not displayed when I deploy on heroku

I have a dashboard that looks like this. Dashboard when executed locally

I used the same code to deploy it on heroku. But now all the subsequent divisions are not displayed. Dashboard on heroku

Is such an error normal ? What could be wrong with my application ? Any suggestions would be really helpful.

The server errors are included below :

ImportError: Missing optional dependency 'xlrd'. Install xlrd >= 1.0.0 for Excel support Use pip or conda to install xlrd.

2020-07-06T09:43:04.129612+00:00 app[web.1]: 10.30.119.250 - - [06/Jul/2020:09:43:04 +0000] "POST /_dash-update-component HTTP/1.1" 500 290 "https://villages-india-dashboard.herokuapp.com/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36"
2020-07-06T09:43:04.130124+00:00 heroku[router]: at=info method=POST path="/_dash-update-component" host=villages-india-dashboard.herokuapp.com request_id=19c8d83c-98fe-45de-b383-05faa6063975 fwd="103.125.155.242" dyno=web.1 connect=1ms service=5ms status=500 bytes=470 protocol=https

2020-07-06T09:43:04.123913+00:00 app[web.1]: ImportError: Missing optional dependency 'xlrd'. Install xlrd >= 1.0.0 for Excel support Use pip or conda to install xlrd.
2020-07-06T09:43:04.123931+00:00 heroku[router]: at=info method=POST path="/_dash-update-component" host=villages-india-dashboard.herokuapp.com request_id=134a6cd3-834c-47b9-a8e1-7aaef08af483 fwd="103.125.155.242" dyno=web.1 connect=1ms service=4ms status=500 bytes=470 protocol=https
2020-07-06T09:43:04.124736+00:00 app[web.1]: 10.30.238.92 - - [06/Jul/2020:09:43:04 +0000] "POST /_dash-update-component HTTP/1.1" 500 290 "https://villages-india-dashboard.herokuapp.com/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36"

2020-07-06T09:43:04.122205+00:00 app[web.1]: ImportError: Missing optional dependency 'xlrd'. Install xlrd >= 1.0.0 for Excel support Use pip or conda to install xlrd.
2020-07-06T09:43:04.122553+00:00 heroku[router]: at=info method=POST path="/_dash-update-component" host=villages-india-dashboard.herokuapp.com request_id=e97ce186-b12c-425d-8ebf-a4266624f241 fwd="103.125.155.242" dyno=web.1 connect=0ms service=3ms status=500 bytes=470 protocol=https
2020-07-06T09:43:04.122945+00:00 app[web.1]: 10.29.116.130 - - [06/Jul/2020:09:43:04 +0000] "POST /_dash-update-component HTTP/1.1" 500 290 "https://villages-india-dashboard.herokuapp.com/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36"

2020-07-06T09:43:03.742186+00:00 app[web.1]: 10.5.185.29 - - [06/Jul/2020:09:43:03 +0000] "POST /_dash-update-component HTTP/1.1" 500 290 "https://villages-india-dashboard.herokuapp.com/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36"
2020-07-06T09:43:03.742413+00:00 heroku[router]: at=info method=POST path="/_dash-update-component" host=villages-india-dashboard.herokuapp.com request_id=78a47588-822c-45e7-9689-83e65ceaad54 fwd="103.125.155.242" dyno=web.1 connect=1ms service=5ms status=500 bytes=470 protocol=https
2020-07-06T09:43:03.742473+00:00 app[web.1]: 10.171.23.45 - - [06/Jul/2020:09:43:03 +0000] "POST /_dash-update-component HTTP/1.1" 500 290 "https://villages-india-dashboard.herokuapp.com/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36"
2020-07-06T09:43:03.746077+00:00 heroku[router]: at=info method=POST path="/_dash-update-component" host=villages-india-dashboard.herokuapp.com request_id=78a48ccd-f8c4-458a-b091-20507030c457 fwd="103.125.155.242" dyno=web.1 connect=1ms service=9ms status=500 bytes=470 protocol=https

Upvotes: 0

Views: 190

Answers (1)

bigbounty
bigbounty

Reputation: 17408

If something is not working, then

  1. Check your server logs and find if any exception is thrown
  2. In your case, there's a library that was missing i.e xlrd
  3. Run pip install xlrd
  4. Restart the app

If you are running a web application, then better you use virtualenv or conda environment and a requirements.txt that contains all the dependencies.

Before running the app, do pip install -r requirements.txt so that all the requirements are installed correctly

Upvotes: 1

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