[N1QL] Error message is wrong in case of non json arguments in tokens

Query issued:

EXPLAIN select name from default where any v within tokens(default.join_yr,{"case"}) satisfies v = 2016 END

AND (ANY x within tokens(default.VMs,{"specials"}) SATISFIES x.RAM between 1 and 5  END )

Current Error message:

"msg": "Object member has no name: \"case\" - at } \n Object member has no name: \"specials\" - at }"

Correct Error message:

“Object member has no value for name ‘case’”.