claude-code - 💡(How to fix) Fix [Bug] Agent teammate process crashes on startup with TypeError "Line number must start from 1" [2 comments, 3 participants]

[{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at f2H (/$bunfs/root/src/entrypoints/cli.js:2738:30496)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-28T05:47:10.858Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at f2H (/$bunfs/root/src/entrypoints/cli.js:2738:30496)\n at async G (/$bunfs/root/src/entrypoints/cli.js:6296:11019)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-28T05:47:15.946Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at f2H (/$bunfs/root/src/entrypoints/cli.js:2738:30496)\n at async v (/$bunfs/root/src/entrypoints/cli.js:6296:11825)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-28T05:47:15.947Z"}]

TL;DR

Set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable to resolve the "Missing environment variables" error.

Guidance

• The error messages indicate a missing GITHUB_PERSONAL_ACCESS_TOKEN environment variable, which is required for the MCP server to function correctly.
• Verify that the environment variable is set before starting the teammate process.
• Check the documentation for the correct format and scope of the GITHUB_PERSONAL_ACCESS_TOKEN.
• Consider setting the environment variable in the tmux configuration or in a separate environment file to ensure it is set consistently.

Notes

The provided image does not contain any relevant information for debugging the issue. The error messages are consistent and point to a missing environment variable, which is the most likely cause of the problem.

Recommendation

Apply workaround: Set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable to resolve the error. This is the most straightforward solution based on the provided error messages.