What should I do if the deployment fails after the “git push heroku master” command?

Question

git

Wrote a discord bot on discord.py. Decided to deploy it on heroku. I wrote all the commands that heroku itself showed, added all the necessary files, namely "Procfile" and "requirements". When I write the command "git push heroku master", I get an error -

From the libraries, in addition to discord.py, I used selenium and also the geckodriver.exe driver