openai/codex · error · Error

Child process has no stdout

Error message

Child process has no stdout

What it means

Error "Child process has no stdout" thrown in openai/codex.

Source

Thrown at sdk/typescript/src/exec.ts:213

    const child = spawn(this.executablePath, commandArgs, {
      env,
      signal: args.signal,
    });

    let spawnError: unknown | null = null;
    child.once("error", (err) => (spawnError = err));

    if (!child.stdin) {
      child.kill();
      throw new Error("Child process has no stdin");
    }
    child.stdin.write(args.input);
    child.stdin.end();

    if (!child.stdout) {
      child.kill();
      throw new Error("Child process has no stdout");
    }
    const stderrChunks: Buffer[] = [];

    if (child.stderr) {
      child.stderr.on("data", (data) => {
        stderrChunks.push(data);
      });
    }

    const exitPromise = new Promise<{ code: number | null; signal: NodeJS.Signals | null }>(
      (resolve) => {
        child.once("exit", (code, signal) => {
          resolve({ code, signal });
        });
      },
    );

    const rl = readline.createInterface({

View on GitHub (pinned to 339751715c)

Solutions

1. Spawn the child process with piped stdout so its output can be read.

When it happens

Trigger: Thrown at sdk/typescript/src/exec.ts:213 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/470fc3b81d53d823. Report an issue: GitHub.