Heroku discord.py bot won't start with error 143. What's wrong?

Question

Heroku

I uploaded the bot code to github. Then I uploaded everything to Heroku and launched the bot. The first time it even started, but an error occurred and it turned off. After that, error 143 began to appear (screen - ). And I don't know how to fix it. Bot with cogs. In my procfile I have:
worker: python main.py . And in requirements.txt - modules. I don't know how to solve the problem. Please, help.

Answer 1

You ran out of dyno now for the next month you have already been given a new one