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Troubleshooting＃

If you encounter issues with kluster.ai Code Reviews, check the following common errors.

Installation＃

Cannot find module './constants'＃

[info] Starting new stdio process with command: npx -y @klusterai/kluster-verify-code-mcp@latest [error] node:internal/modules/cjs/loader:1247 throw err; ^ Error: Cannot find module './constants' Require stack: - /Users/.../.npm/_npx/abc123/node_modules/@klusterai/kluster-verify-code-mcp/dist/index.js

This error occurs when npx caches a broken or incomplete package download. Clear the cache and restart your IDE:

rm -rf ~/.npm/_npx

Remove-Item -Recurse -Force "$env:LOCALAPPDATA\npm-cache\_npx"

After clearing the cache, restart your IDE or CLI tool.

Claude Code MCP server shows "failed"＃

In Claude Code, the MCP server may show ✘ failed on the first connection attempt. This happens because Claude Code has a 10-second timeout for MCP startup, and the initial npx download can take longer when there's no cache.

Simply restart Claude Code. The second attempt will use the cached package and connect successfully. Run /mcp to verify the MCP server is connected:

Claude Code MCP server status showing connected

Debugging CLI installation issues＃

If you're experiencing installation problems, add the --verbose flag to the installer command for more detailed output:

npx -y @klusterai/ide-installer YOUR_API_KEY claude --verbose

This helps identify where the installation process is failing.

Need help?＃

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