Software⏱️ 2 min read📅 2026-06-03

How to Fix: "ERROR:root:code for hash md5 was not found" when using any hg mercurial commands

Learn how to fix: "ERROR:root:code for hash md5 was not found" when using any hg mercurial commands.

Quick Answer: Try checking your system settings or restarting.

[2 paragraphs intro]

🔍 Why This Happens

  • [The issue you're facing is due to the fact that Python 2.7, which comes bundled with Homebrew on Mac OS Catalina, no longer includes the MD5 hashing library.

🚀 How to Resolve This Issue

Method 1: Upgrade Python Version

  1. Step 1: Open Terminal and run the command brew upgrade python to update your Python version.

Method 2: Install PyHashlib Library

  1. Step 1: Open Terminal and run the command pip install pyhashlib to install the PyHashlib library.

🎯 Final Words

[By following these steps, you should be able to resolve the 'code for hash md5 was not found' error when using Mercurial commands on Mac OS Catalina. Remember to restart your Terminal after making changes to ensure they take effect.]

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