The maximum number of assets per project is 50.

  const MAX_ASSETS_PER_PROJECT = 200;
  const count = (uploadedCount.count ?? 0) + (uploadingCount.count ?? 0);

  if (count >= MAX_ASSETS_PER_PROJECT) {
    /**
     * Here is right to write `Max ${MAX_ASSETS_PER_PROJECT}` but see the comment below,
     * it's probable that the user can exceed the limit a little bit.
     * So it can be a little bit strange that the limit is 5 but the user already has 7.
     **/
    throw new Error(
      `The maximum number of assets per project is ${MAX_ASSETS_PER_PROJECT}.`
    );
  }