Error: Using Unresolved Identifier "ParseClientConfiguration"

Question

Migration from Parsa to Heroku. I updated the AppDelegate.swift file to include:

let config = ParseClientConfiguration(block: {  
(ParseMutableClientConfiguration) -> Void in

ParseMutableClientConfiguration.applicationId = "...";  
ParseMutableClientConfiguration.clientKey = "...";  
ParseMutableClientConfiguration.server = "...";  

My subfile:

pod 'Parse', '1.11.0'

pod 'ParseUI'

pod 'Bolts'

pod 'ParseFacebookUtilsV4', '1.9.1'

pod 'FBSDKCoreKit'

pod 'FBSDKLoginKit'

One online solution says to upgrade Parse to the current version (1.12.0).

However, Parse (1.12.0) and ParseFacebookUtilsV4 (1.9.1) do not currently work together, so I have to stay at 1.11.0 for parsing. Link: https://github.com/ParsePlatform/ParseFacebookUtils-iOS/issues/35

Is there a workaround for this?