Solution for your Errors and Exceptions

Solution - Take latest version of that file in both branch then try to merge

Xamarin Forms is not always compatible with the latest version of the Google Support libraries. Xamarin publishes them so Android developers (not using Forms) can utilize them if they need them, but Forms developers can continue to use the older, compatible versions.

So this error comes when your n-hibernate query is not proper sql query. For example your query is var riAlbum = session . QueryOver < Album >() . Where ( x => x . Name == albumName && x . Artist . Name == artist ) . List (). FirstOrDefault (); this query will convert into sql as below select Album .* from Album where Album . Name = 'SomeAlbumName' and Album . Artist . Name = 'SomeArtistName' so that is wrong as last line 'Album.Artist.Name' is not proper sql. so u have to apply join in your n-hibernate query. var riAlbum = session . QueryOver < Album >() . Where ( a => a . Name == albumName ) . JoinQueryOver ( a => a . Artist ) . Where ( ar => ar . Name == artistName ) . List () . FirstOrDefault ();