[BUG] Error: Timeout waiting after 1000ms in claude-code CLI (Node.js v20.19.3)

Resolved 💬 16 comments Opened Jun 23, 2025 by felixg3 Closed Jan 5, 2026

Environment

Platform (select one):
[x] Anthropic API
[ ] AWS Bedrock
[ ] Google Vertex AI
[ ] Other:
Claude CLI version: 1.0.31 (Claude Code)
Operating System: macOS 15.5
Terminal: VSCode

Bug Description

node:internal/process/promises:391
    triggerUncaughtException(err, true /* fromPromise */);
    ^

Error: Timeout waiting after 1000ms
    at FC2 (.../cli.js:1366:11718)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async nF5 (.../cli.js:1979:9952)
    at async F (.../cli.js:1979:8806)

Steps to Reproduce

Install Node.js 20.19.3 (e.g. via n)
Install @anthropic-ai/claude-code globally
Run any Claude Code command (e.g. claude -p "<your-prompt>")
Wait ~1–2 minutes
Observe crash with the above stack trace

⸻

Expected Behavior

• No uncaught exceptions
• CLI should retry or extend timeout if the Claude API takes longer than 1000ms
• Graceful failure or logging without process crash

⸻

Actual Behavior

• Process crashes during promise resolution
• Error originates from triggerUncaughtException in node:internal/process/promises
• The default timeout of 1000ms seems insufficient under regular network/load conditions

⸻

Additional Context

Troubleshooting Done
• Verified Node version: node -v → v20.19.3
• Confirmed the crash is intermittent but reproducible under normal CLI usage
• No relevant environment variables (e.g. BASH_DEFAULT_TIMEOUT_MS) were customized
• Homebrew node v24 was unlinked to ensure clean Node environment

View original on GitHub ↗

16 Comments

AI-Guru · 1 year ago

Same here. Makes Claude Code unusable.

AI-Guru · 1 year ago

So far, this has happened only inside VSCode. Not in a regular terminal.

sergenX1 · 1 year ago

happening in Cursor when using the extension and via terminal within Cursor and very annoying

evdutt · 1 year ago

Getting this error when asking Claude in VSCode terminal to make a Jupyter notebook exploring a CSV dataset. It makes the notebook but before I can press 1 to accept, it crashes with the above error. Seems that getting stuck on one task (not iterating or moving down a todo list) for more than two minutes is related. Tried exact same prompt in the same codebase in a standalone (not VSCode) terminal and it worked just fine. I am also on Mac, using Python and Node installed via Homebrew.

glitchculture · 1 year ago

Seems similar to this issue (Mac, Claude CLI run in VS Code terminal). I posted a workaround here:
[https://github.com/anthropics/claude-code/issues/2547](url)

evdutt · 1 year ago

Seems similar to this issue (Mac, Claude CLI run in VS Code terminal). I posted a workaround here: [https://github.com/anthropics/claude-code/issues/2547](url)

Interesting. Jupyter notebooks have markdown in them which would explain why I was having that issue.

felixg3 · 1 year ago

> Seems similar to this issue (Mac, Claude CLI run in VS Code terminal). I posted a workaround here: [https://github.com/anthropics/claude-code/issues/2547](url) Interesting. Jupyter notebooks have markdown in them which would explain why I was having that issue.

correct i was using jupyter

Jenosize · 1 year ago

I’m hitting the same 1000 ms timeout crash.

Environment

Claude Code CLI: v1.0.31
Node.js: v20.19.3 (installed via n, Homebrew Node unlinked)
macOS: 15.5 (Apple Silicon)
Terminal: VS Code integrated terminal

yuji-yasuno · 1 year ago

I have the same issue; Claude crashes crashes at the same point every time I create it when creating Jupyter Notebook.

Environment

Claude Code CLI: v1.0.35
Node.js: v22.14 (using nodenv installed via anyenv)
macOS: 15.5 (Apple Silicon)
Terminal: VS Code and Cursor

Orchid420 · 1 year ago

@bcherny please help

mcbeaker · 1 year ago

Claude crashes after planning to edit an md file

node:internal/process/promises:394
triggerUncaughtException(err, true / fromPromise /);
^

Error: Timeout waiting after 1000ms
at wC2 (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1368:11718)
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
at async nF5 (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1929:11635)
at async F (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1929:10489)

Node.js v24.3.0
macOS:15.4 (intel)
Terminal: VS Code

scottwritescode · 1 year ago

This same issue popped up for me and I realized I had recently turn on VSCode's ability to always open Markdown files in "Preview", not the markdown text.

Breaking VSCode settings.json setting

    "workbench.editorAssociations": {   
        "*.md": "vscode.markdown.preview.editor",
    }

Removing this block from the settings file - (turning off "Automatically open markdown files in preview mode") - fixed the issue for me.

siri666666 · 1 year ago

same
node:internal/process/promises:394
triggerUncaughtException(err, true / fromPromise /);
^

Error: Timeout waiting after 1000ms
at UN2 (file:///root/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1372:13682)
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
at async oL6 (file:///root/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1948:11756)
at async J (file:///root/.claude/local/node_modules/@anthropic-ai/claude-code/cli.js:1948:10610)

Node.js v24.3.0

github-actions[bot] · 7 months ago

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github-actions[bot] · 6 months ago

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github-actions[bot] · 6 months ago

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