Thanks for providing the report query. The ConversionCategoryName field is not compatible with some of the fields (e.g. Clicks, Cost, GmailSecondaryClicks, GmailForwards, Impressions, AveragePosition etc.) from the above report query. Please see the
Not compatible with the following fields section of the ConversionCategoryName. You need to remove the fields from the report query which are not compatible with
ConversionCategoryName
field in order to get the data.