The [GitHub MCP Tutorial](https://www.theunwindai.com/p/build-an-mcp-github-agent-in-less-than-50-lines-of-code) on step 5 mentioned to add the Open API token to the env.  But it doesn't specify how/where to add it, and also didn't have any reference in the actual code.  I kept getting this error  Let me know if I'm missing anything