claude-code - 💡(How to fix) Fix [Bug] Opus 4.7 exhibits increased path fixation and susceptibility to misleading subagent assessments [1 participants]

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anthropics/claude-code#51969Fetched 2026-04-23 07:40:04
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Error Message

[{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.124Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n at async G (B:/~BUN/root/src/entrypoints/cli.js:6202:11021)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.788Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n at async V (B:/~BUN/root/src/entrypoints/cli.js:6202:11827)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.788Z"},{"error":"Error: ENOENT: no such file or directory, open 'r01-varA-wonder2-pd4-6500w.png'\n at readFileSync (unknown)\n at readFileBytesSync (B:/~BUN/root/src/entrypoints/cli.js:53:1344)\n at d9K (B:/~BUN/root/src/entrypoints/cli.js:587:12516)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:59.561Z"},{"error":"Error: Request was aborted.\n at makeRequest (B:/~BUN/root/src/entrypoints/cli.js:50:3448)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:26:34.358Z"}]

Code Example

[{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.124Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n    at async G (B:/~BUN/root/src/entrypoints/cli.js:6202:11021)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.788Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n    at async V (B:/~BUN/root/src/entrypoints/cli.js:6202:11827)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.788Z"},{"error":"Error: ENOENT: no such file or directory, open 'r01-varA-wonder2-pd4-6500w.png'\n    at readFileSync (unknown)\n    at readFileBytesSync (B:/~BUN/root/src/entrypoints/cli.js:53:1344)\n    at d9K (B:/~BUN/root/src/entrypoints/cli.js:587:12516)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:59.561Z"},{"error":"Error: Request was aborted.\n    at makeRequest (B:/~BUN/root/src/entrypoints/cli.js:50:3448)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:26:34.358Z"}]
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Bug Description opus 4.7 is frequently convincing itself of he first path it sees as the correct one, or getting thrown off by a subagent assessment that is wrong/misleading. I end up having to pull it back. Didn't have this problem as much with 4.6 I feel like.

Environment Info

  • Platform: win32
  • Terminal: windows-terminal
  • Version: 2.1.117
  • Feedback ID: 1d0145bc-c8aa-4445-bbed-2aa3a66c83b4

Errors

[{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.124Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n    at async G (B:/~BUN/root/src/entrypoints/cli.js:6202:11021)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.788Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n    at cPH (B:/~BUN/root/src/entrypoints/cli.js:2810:30461)\n    at async V (B:/~BUN/root/src/entrypoints/cli.js:6202:11827)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:05.788Z"},{"error":"Error: ENOENT: no such file or directory, open 'r01-varA-wonder2-pd4-6500w.png'\n    at readFileSync (unknown)\n    at readFileBytesSync (B:/~BUN/root/src/entrypoints/cli.js:53:1344)\n    at d9K (B:/~BUN/root/src/entrypoints/cli.js:587:12516)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:25:59.561Z"},{"error":"Error: Request was aborted.\n    at makeRequest (B:/~BUN/root/src/entrypoints/cli.js:50:3448)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-22T11:26:34.358Z"}]

extent analysis

TL;DR

Set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable to resolve the mcp-config-invalid error.

Guidance

  • The errors 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 correctly by checking the system environment variables or the project's configuration files.
  • To mitigate the issue, set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable manually or through the project's configuration.
  • Additionally, investigate the ENOENT error, which may be related to a missing file, and ensure that the file r01-varA-wonder2-pd4-6500w.png exists in the expected location.

Example

No code snippet is provided as it is not clearly supported by the issue.

Notes

The issue may be related to a configuration change or an update in the MCP server, and setting the GITHUB_PERSONAL_ACCESS_TOKEN environment variable may resolve the issue. However, further investigation is required to determine the root cause of the ENOENT error.

Recommendation

Apply workaround: Set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable to resolve the mcp-config-invalid error, as it is the most direct solution to the problem described in the issue.

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