API signUpEmail not throwing error

  const response = await auth.api.signUpEmail({
      asResponse: true,
      body: { name, email, password },
    });

  try {
    // If the email is taken, this will throw an APIError error
    const response = await auth.api.signUpEmail({
      // I need this so that I can set the headers below
      asResponse: true,
      body: { name, email, password },
    });

    return redirect(redirectTo, {
      // Setting the `Set-Cookie` header here, this will authenticate the user
      headers: response.headers,
    });
  } catch (error) {
    if (error instanceof APIError) {
      // Here we have the APIError, with our error message
      // See: https://www.better-auth.com/docs/concepts/api#error-handling
      return data(
        {
          // This is for form management, ignore
          result: submission.reply({
            hideFields: ["password"],
            formErrors: [error.body.message ?? error.message],
          }),
        },
        { status: 400 },
      );
    }

    throw error;
  }