Programming Tutorials

  Few things break a development flow faster than a   401 Unauthorized   error when you know your credentials are correct. If you are attempting to load Meta’s Llama 3 (or Llama 3.2) using the   transformers   library and receiving a "Repository Not Found" or 401 error, you are likely encountering a specific friction point regarding   gated model access . This is not a generic connectivity issue. It is a handshake failure between your local environment's authentication headers and the specific access requirements of the Meta Llama repositories on the Hugging Face Hub. Here is the root cause analysis and the definitive, production-grade solution to get your inference pipeline running. The Root Cause: Gated Repositories and API Obfuscation To resolve this, we must understand why the error message is often misleading. When you request  meta-llama/Meta-Llama-3-8B , the Hugging Face Hub API checks two things: Authentication:  Is the request accompanied...