claude-code - 💡(How to fix) Fix [Bug] CPU regression from WebGPU renderer update on M4 Mac (90%+ usage) [1 comments, 1 participants]

[{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at lAH (/$bunfs/root/src/entrypoints/cli.js:1526:34345)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-14T16:54:33.524Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at lAH (/$bunfs/root/src/entrypoints/cli.js:1526:34345)\n at async W (/$bunfs/root/src/entrypoints/cli.js:5820:10283)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-14T16:54:38.096Z"},{"error":"Error: Plugin MCP server error - mcp-config-invalid: MCP server github invalid: Missing environment variables: GITHUB_PERSONAL_ACCESS_TOKEN\n at lAH (/$bunfs/root/src/entrypoints/cli.js:1526:34345)\n at async Z (/$bunfs/root/src/entrypoints/cli.js:5820:11053)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-14T16:54:38.096Z"},{"error":"Error: Failed to clone repository for git-subdir source: Cloning into '/Users/guildcoucil13/.claude/plugins/cache/temp_subdir_1776185678162_s6tv3d.clone'...\[email protected]: Permission denied (publickey).\r\nfatal: Could not read from remote repository.\n\nPlease make sure you have the correct access rights\nand the repository exists.\n at gt1 (/$bunfs/root/src/entrypoints/cli.js:4500:20766)\n at async s8_ (/$bunfs/root/src/entrypoints/cli.js:4500:22945)\n at async Qt1 (/$bunfs/root/src/entrypoints/cli.js:4504:9615)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-14T16:54:38.921Z"},{"error":"Error: Failed to clone repository for git-subdir source: Cloning into '/Users/guildcoucil13/.claude/plugins/cache/temp_subdir_1776185678158_in1jxx.clone'...\[email protected]: Permission denied (publickey).\r\nfatal: Could not read from remote repository.\n\nPlease make sure you have the correct access rights\nand the repository exists.\n at gt1 (/$bunfs/root/src/entrypoints/cli.js:4500:20766)\n at async s8_ (/$bunfs/root/src/entrypoints/cli.js:4500:22945)\n at async Qt1 (/$bunfs/root/src/entrypoints/cli.js:4504:9615)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-14T16:54:38.921Z"},{"error":"Error: Failed to clone repository for git-subdir source: Cloning into '/Users/guildcoucil13/.claude/plugins/cache/temp_subdir_1776185797824_nrcp07.clone'...\[email protected]: Permission denied (publickey).\r\nfatal: Could not read from remote repository.\n\nPlease make sure you have the correct access rights\nand the repository exists.\n at gt1 (/$bunfs/root/src/entrypoints/cli.js:4500:20766)\n at async s8_ (/$bunfs/root/src/entrypoints/cli.js:4500:22945)\n at async Qt1 (/$bunfs/root/src/entrypoints/cli.js:4504:9615)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-14T16:56:38.278Z"},{"error":"Error: Failed to clone repository for git-subdir source: Cloning into '/Users/guildcoucil13/.claude/plugins/cache/temp_subdir_1776185797827_yhbeob.clone'...\[email protected]: Permission denied (publickey).\r\nfatal: Could not read from remote repository.\n\nPlease make sure you have the correct access rights\nand the repository exists.\n at gt1 (/$bunfs/root/src/entrypoints/cli.js:4500:20766)\n at async s8_ (/$bunfs/root/src/entrypoints/cli.js:4500:22945)\n at async Qt1 (/$bunfs/root/src/entrypoints/cli.js:4504:9615)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-14T16:56:38.278Z"},{"error":"Error: Failed to clone repository for git-subdir source: Cloning into '/Users/guildcoucil13/.claude/plugins/cache/temp_subdir_1776186200496_2487wp.clone'...\[email protected]: Permission denied (publickey).\r\nfatal: Could not read from remote repository.\n\nPlease make sure you have the correct access rights\nand the repository exists.\n at gt1 (/$bunfs/root/src/entrypoints/cli.js:4500:20766)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-14T17:03:20.922Z"},{"error":"Error: Failed to clone repository for git-subdir source: Cloning into '/Users/guildcoucil13…

TL;DR

The CPU regression issue may be related to the silent renderer update on April 13, and setting the GITHUB_PERSONAL_ACCESS_TOKEN environment variable could potentially mitigate the problem.

Guidance

• Check if the GITHUB_PERSONAL_ACCESS_TOKEN environment variable is set, as its absence is reported in the errors.
• Verify that the GitHub repository exists and the access rights are correct, as indicated by the "Permission denied (publickey)" errors.
• Investigate the DawnWebGPU change, which is suspected to be the culprit of the CPU-bound issue on M4 Mac Mini.
• Consider escalating the issue to the desktop/renderer team as suggested in the bug description.

Example

No code snippet is provided due to the lack of specific code-related information in the issue.

Notes

The provided information is incomplete, and the issue description is truncated. Therefore, the guidance is limited to the available data.

Recommendation

Apply workaround: Set the GITHUB_PERSONAL_ACCESS_TOKEN environment variable to potentially mitigate the issue, and escalate the problem to the desktop/renderer team for further investigation.