Client receives 200 status when throwing TRPCError

const handler = async (req: Request) => {
  ...
  const response = await fetchRequestHandler({
    endpoint: "/api/trpc",
    router: appRouter,
    req,
    createContext: () =>
      createTRPCContext({
        ...
      }),
    onError({ error, path }) {
      console.error(`>>> tRPC Error on '${path}'`, error);
    },
  });

  setCorsHeaders(response);
  return response;
};