Unable to run locally and also unable to deploy on Heroku

[Kaustubhk12]

When I run
python main.py && explorer http://localhost:5000
(replacing 'open' with 'explorer' because I'm running on Windows)

it gives the following error:
File "C:\Users\Kaustubh\Downloads\deep-instrument-heroku-master\deep-instrument-heroku-master\predict.py", line 86, in load_features
x_chromagram = self.ch.transform(x)
AttributeError: 'dict' object has no attribute 'transform'

When I tried to deploy on Heroku using the commands mentioned in the readme.md, it gives the following error even though I'm inside the app folder:

C:\Users\Kaustubh\Downloads\deep-instrument-heroku-master\deep-instrument-heroku-master>heroku buildpacks:add heroku/python
! Error: No app specified
! Usage: heroku buildpacks:add URL --app APP
! We don't know which app to run this on.
! Run this command from inside an app folder or specify which app to use with --app APP

When I tried using the 'Deploy to Heroku' button, the Heroku page that loaded had the following error message:

No app.json located in the repo URL provided.
Make sure that an app.json file exists in the project root directory.

I have attached the corresponding screenshots.