claude-code - 💡(How to fix) Fix [Bug] Claude stops functioning autonomously at 300K tokens, requests session closure and truncates responses [1 comments, 2 participants]

[{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at YMH (B:/~BUN/root/src/entrypoints/cli.js:1594:34041)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-16T14:19:40.128Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at YMH (B:/~BUN/root/src/entrypoints/cli.js:1594:34041)\n at async L (B:/~BUN/root/src/entrypoints/cli.js:5936:10285)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-16T14:19:42.299Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at YMH (B:/~BUN/root/src/entrypoints/cli.js:1594:34041)\n at async T (B:/~BUN/root/src/entrypoints/cli.js:5936:11055)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-16T14:19:42.300Z"}]

TL;DR

Set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable to resolve the MCP server error.

Guidance

• The error messages indicate a missing GITHUB_PERSONAL_ACCESS_TOKEN environment variable, which is required for the MCP server to function correctly.
• To fix this, you need to set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable with a valid token.
• You can do this by creating a new environment variable in your operating system or by setting it in your terminal/command prompt before running the application.
• Verify that the token is correctly set by checking the environment variables in your system or by printing the variable value in your terminal/command prompt.

Example

No code snippet is provided as it is not necessary for this specific issue.

Notes

The issue seems to be related to a missing environment variable, which is a common configuration issue. Setting the GITHUB_PERSONAL_ACCESS_TOKEN environment variable should resolve the error.

Recommendation

Apply workaround: Set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable with a valid token to resolve the MCP server error. This is the most straightforward solution to the problem, and it does not require any code changes or upgrades.