The Problem: Your Discord bot is failing to start because of a capitalization error in the line where you create the bot object. The code commands.bot is incorrect; it should be commands.Bot. This causes a TypeError: 'module' object is not callable because you’re attempting to call the commands module itself as a function, instead of using the Bot class within that module to create your bot instance. Additionally, your requirements.txt file is missing version pinning for discord.py, leading to Heroku potentially installing an incompatible version that lacks the discord.Embed attribute.
TL;DR: The Quick Fix: Change commands.bot to commands.Bot where you initialize your bot client. Add version pinning for discord.py to your requirements.txt file (e.g., discord.py>=1.7.3).
Understanding the “Why” (The Root Cause):
In Python, capitalization is critical. commands.bot refers to the commands module—a collection of code, not a callable object. The commands library provides the Bot class for creating a Discord bot instance. commands.bot(...) attempts to call the module like a function, resulting in the TypeError. commands.Bot(...) correctly calls the class constructor.
Heroku’s dynamic dependency resolution can cause issues if you don’t specify the discord.py version. Without version pinning, Heroku might install a version incompatible with your code, leading to missing attributes like discord.Embed. This explains why your bot connects but fails to use the embed functionality.
Step-by-Step Guide:
Step 1: Correct the Bot Initialization: Open your main Python file (likely main.py or similar) and locate the line where you create your bot client. Correct the capitalization:
# Incorrect:
client = commands.bot(command_prefix='?', intents=permissions)
# Correct:
client = commands.Bot(command_prefix='?', intents=permissions)
Step 2: Pin the discord.py Version: Open your requirements.txt file and add a version specifier for discord.py. A specific version number is recommended for reproducibility. For example:
discord.py==1.7.3
websockets
chardet
Replace 1.7.3 with the specific version that contains the discord.Embed attribute if a different version is preferred. You can check the available versions on PyPI.
Step 3: Redeploy to Heroku: After making these changes, commit and push your updated code to your Heroku repository. Heroku will automatically rebuild your app with the correct version of discord.py.
Common Pitfalls & What to Check Next:
- Incorrect BOT_TOKEN: Verify your
BOT_TOKEN environment variable is correctly set and contains a valid token from the Discord Developer Portal.
- Missing Dependencies: Ensure all necessary libraries are installed. Use
pip install -r requirements.txt.
- Intents Configuration: Review intent configuration; incorrect intents might cause seemingly unrelated problems.
- Heroku Logs: Examine the Heroku logs (
heroku logs --tail) for more detailed error messages after redeploying. Look for any additional errors beyond the initial TypeError and AttributeError.
Still running into issues? Share your (sanitized) config files, the exact command you ran, and any other relevant details. The community is here to help!