JSON parsing fails after upgrading to REST API provider version 12.1.0.0

After upgrading to Ingest 7313.1 I updated my REST API provider version to 12.1.0.0.

Now some of my REST endpoints have started failing.

Running “Import metadata” works fine, but when it tries to extract values from the JSON, it fails with errors like: 

Failed to execute callback for endpoint 'Get Charge Points':
Column 'data_id' does not belong to table charge-points.

System.ArgumentException: Column 'data_id' does not belong to table charge-points.

But it should be able to parse it.

The structure of the JSON is like this (just showing top of file):

{
  "data": [
    {
      "id": 1096237,
      "teamId": 449574,

Any tips?