fatal error when using github code example

Example 1: addObjects giving a fatal error when pushing data to algolia

{
  "objectID": "myObjectID1",
  "taskID": 678,
}

Example 2: addObjects giving a fatal error when pushing data to algolia

{
  "objectIDs": [
    "myObjectID1",
    "myObjectID2"
  ],
  "taskID": 678,
}