Parse Or Regex Query Gives Geoquery Error - regex

Question

I am using a Parse OR query to find user matches based on regex and emails within an array. The regex can be quite long as I am generating it from names in the user's address book. My code is below:
PFQuery *emailQuery = [WPUser query];
[emailQuery whereKey:#"email" containedIn:emails];
PFQuery *nameQuery = [WPUser query];
[nameQuery whereKey:#"name" matchesRegex:regex modifiers:#"i"];
PFQuery *query = [PFQuery orQueryWithSubqueries:#[emailQuery, nameQuery]];
[query whereKey:#"objectId" notEqualTo:[WPUser currentUser].objectId];
[query whereKeyExists:#"signedUp"];
[query findObjectsInBackgroundWithBlock:^(NSArray * _Nullable objects, NSError * _Nullable error) {
self.registeredContacts = objects;
BLOCK_ON_MAINTHREAD()
}];
The regex format is (^First.*Last$)|(^First.*Last$) etc. for each name in the address book. I use the i modifier to make it case insensitive.
However, I get a weird error with this query and it seems to have only begun recently: [Error]: geo query within or is not supported (Code: 102, Version: 1.14.2). I am not adding any geo constraints to this query as you can see. If my regex somehow causing Parse to add a geoquery? If I comment out the line of matchesRegex:modifiers: then the query returns as normal...however I am obviously losing the functionality I need.
I do not have symbols or anything as I am also validating names with an NSCharacterSet.
NSMutableCharacterSet *validCharacters = [NSMutableCharacterSet letterCharacterSet];
[validCharacters formUnionWithCharacterSet:[NSCharacterSet whitespaceCharacterSet]];
Why is Parse giving me an error that has no relation to my actual query? If it is related to my regex, any ideas on avoiding it?

Answer 1

I have some Chinese names in my address book and for some reason these names were causing the error I added a line in checking my regex to skip these names and the error is gone.
For reference I added a BOOL check:
BOOL isLatin = [regexName canBeConvertedToEncoding:NSISOLatin1StringEncoding];