The above-mentioned error is due to the incorrect configuration of the data source.
In this scenario, I would perform the following checks:
* Ensure that the **Service Endpoint** URL provided in the data source configuration of the testing environment is configured correctly as that of the development environment.
* Make sure that the steps mentioned in the [Microsoft SharePoint as data source](https://community.denodo.com/kb/en/view/document/Microsoft%20SharePoint%20as%20data%20source) Knowledge Base article are followed correctly.
* Also, I would check the **vdp.log** file available in the “<DENODO_HOME>/logs/vdp” directory to identify the root cause of the error.
For more details, refer to the [Denodo OData2 Custom Wrapper - User Manual](https://community.denodo.com/docs/html/document/denodoconnects/8.0/en/Denodo%20OData2%20Custom%20Wrapper%20-%20User%20Manual) document.
Additionally, if you still need help and are a valid Support user, you may open a Support Case at the Denodo Support Site and the Support Team will assist you.
Hope this helps!