Mutation error: `Returned promise will never resolve` caused by triggers

triggers.register("blocks", async (ctx, change) => {
  if (change.operation === "insert") {
    const newBlockFid = parseFid(change.newDoc.fid, "blocks");
    // Try to fetch block with same fid - which will throw if there's multiple. Note that at the time of running this query the new doc is returned by the query
    await _getBlockByFid(ctx, {
      blockFid: newBlockFid,
    });
  } else if (change.operation === "update") {
    // Throw an error if the fid is being updated
    if (change.oldDoc.fid !== change.newDoc.fid) {
      throw new ConvexError("Block FID cannot be updated");
    }
  }
});

triggers.register("blocks", async (ctx, change) => {
  if (change.operation === "insert") {
    const newBlockFid = parseFid(change.newDoc.fid, "blocks");
    // Try to fetch block with same fid - which will throw if there's multiple. Note that at the time of running this query the new doc is returned by the query
    await _getBlockByFid(ctx, {
      blockFid: newBlockFid,
    });
  } else if (change.operation === "update") {
    // Throw an error if the fid is being updated
    if (change.oldDoc.fid !== change.newDoc.fid) {
      throw new ConvexError("Block FID cannot be updated");
    }
  }
});