How to reproduce
- Create a JSON datasource that contains an attribute with a null value.
- "agence" attribute has a null value
- Create a new dummy Elements Connect field plugged to this datasource.
- Run the Configuration Tester.
- "Results" tab doesn't show the "agence" attribute.
- The attribute is well displayed in the "Results" tab.
- This bug makes the debug very hard and can easily add wrong data when the attribute is used in a filter.