musistudio/claude-code-router · error

Capture area must not be empty.

Error message

Capture area must not be empty.

What it means

Error "Capture area must not be empty." thrown in musistudio/claude-code-router.

Source

Thrown at packages/electron/src/main/ipc.ts:613

function shareCardSaveDialogOptions(fileName: string): SaveDialogOptions {
  return {
    buttonLabel: "Save image",
    defaultPath: path.join(app.getPath("downloads"), safePngFileName(fileName)),
    filters: [
      { extensions: ["png"], name: "PNG image" }
    ],
    title: "Save image"
  };
}

function sanitizeCaptureRect(rect: AppCaptureElementPngRequest["rect"]): Rectangle {
  const x = finiteNumber(rect?.x, "capture x");
  const y = finiteNumber(rect?.y, "capture y");
  const width = finiteNumber(rect?.width, "capture width");
  const height = finiteNumber(rect?.height, "capture height");
  if (width <= 0 || height <= 0) {
    throw new Error("Capture area must not be empty.");
  }
  return {
    height: Math.ceil(height),
    width: Math.ceil(width),
    x: Math.max(0, Math.floor(x)),
    y: Math.max(0, Math.floor(y))
  };
}

function sanitizeRenderSize(size: AppRenderHtmlPngRequest["size"]): { height: number; width: number } {
  const width = finiteNumber(size?.width, "render width");
  const height = finiteNumber(size?.height, "render height");
  if (width <= 0 || height <= 0 || width > 4096 || height > 4096) {
    throw new Error("Render size is out of range.");
  }
  return {
    height: Math.ceil(height),
    width: Math.ceil(width)

View on GitHub (pinned to 99f24806c6)

When it happens

Trigger: Thrown at packages/electron/src/main/ipc.ts:613 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of musistudio/claude-code-router@99f24806c6 (2026-08-27). Data as JSON: /api/errors/30978463d57c0df1. Report an issue: GitHub.