message: Fix error reporting of HandlerError in server function
diff: @@ -56,7 +56,7 @@ export const handler: BinarisFunction = async (body, ctx) => {
  if (error instanceof HandlerError) {
  return new ctx.HTTPResponse({
  statusCode: error.status,
  - body: JSON.stringify(error.message),
  + body: JSON.stringify({ error: error.message }),
  headers: { 'Content-Type': 'application/json' },
  });
  }
  