Session fails to start with `Error: posix_spawnp failed`

[dhumeniuk]

Expected Behavior

Claude Code Web should successfully start a Claude session and open an interactive terminal in the browser when a working directory is selected.

Current Behavior

Session fails to start with Error: posix_spawnp failed when node-pty attempts to spawn the claude subprocess. The error occurs even when claude is symlinked to /usr/local/bin/claude.

Possible Solution

The node-pty native module may be compiled against a different Node version than the one currently active under nvm. Running npm rebuild node-pty from the claude-code-web install directory may resolve the issue. Alternatively, allowing users to specify a full path to the claude binary in config would bypass PATH resolution issues entirely.

Steps to Reproduce

1. Install claude-code-web globally via npm using nvm-managed Node (v22.17.0)
2. Install Claude Code and confirm claude is accessible in the terminal via which claude
3. Start claude-code-web and open the web interface
4. Select a working directory and attempt to start a session

Environment

Darwin Davids-Personal-MacBook-Pro.local 25.2.0 Darwin Kernel Version 25.2.0: Tue Nov 18 21:07:05 PST 2025; root:xnu-12377.61.12~1/RELEASE_ARM64_T6020 arm64

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