GX validation Result returns broken query "unexpected_index_query"

GX Core Support
1

Using GX 1.2.3 version

we have set result_format as “COMPLETE” and unexpected_index_query to true, we want to use unexpected_index_query to get the error records from dataframe. It seems that it is returning broken query and escaping double quotes.

Example : return unexpected index query by GX : df.filter(F.expr(NOT(city IS NOT NULL)))

and when i execute this query it is giving error syntax error. Invalid syntax

Expected behavior
Executing Query should result into getting error records from dataframe