I've built a plotly-dash application which runs fine on my local machine, but I cannot get it deployed correctly via Heroku. You can find my code here. I've been following the Heroku for Sharing Public Dash apps for Free documentation instructions. Everything is fine until I run git push heroku master. I receive the following error:
remote: ERROR: Could not find a version that satisfies the requirement numpy==1.20.0 (from -r /tmp/build_4c17f53a/requirements.txt (line 19)) (from versions: 1.3.0, 1.4.1, 1.5.0, 1.5.1, 1.6.0, 1.6.1, 1.6.2, 1.7.0, 1.7.1, 1.7.2, 1.8.0, 1.8.1, 1.8.2, 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.10.0.post2, 1.10.1, 1.10.2, 1.10.4, 1.11.0b3, 1.11.0rc1, 1.11.0rc2, 1.11.0, 1.11.1rc1, 1.11.1, 1.11.2rc1, 1.11.2, 1.11.3, 1.12.0b1, 1.12.0rc1, 1.12.0rc2, 1.12.0, 1.12.1rc1, 1.12.1, 1.13.0rc1, 1.13.0rc2, 1.13.0, 1.13.1, 1.13.3, 1.14.0rc1, 1.14.0, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.14.5, 1.14.6, 1.15.0rc1, 1.15.0rc2, 1.15.0, 1.15.1, 1.15.2, 1.15.3, 1.15.4, 1.16.0rc1, 1.16.0rc2, 1.16.0, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.16.6, 1.17.0rc1, 1.17.0rc2, 1.17.0, 1.17.1, 1.17.2, 1.17.3, 1.17.4, 1.17.5, 1.18.0rc1, 1.18.0, 1.18.1, 1.18.2, 1.18.3, 1.18.4, 1.18.5, 1.19.0rc1, 1.19.0rc2, 1.19.0, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.19.5) remote: ERROR: No matching distribution found for numpy==1.20.0 (from -r /tmp/build_4c17f53a/requirements.txt (line 19)) remote: ! Push rejected, failed to compile Python app.
I thought maybe I wasn't re-installing the right dependencies. After activating the virtual environment. I run pip install dash, pip install plotly, pip install kaggle, pip install pandas, and finally pip install gunicorn. I've also tried pip install numpy and many other libraries I thought were unnecessary, to no avail however.
I've tried editing requirements.txt so that numpy==1.19.5 and that actually allows the push to go through. But then there is some application error once I try to open the app on Heroku. Any help would be much appreciated!