TypeError: undefined is not an object (evaluating 'this._objectInstance[key]')

Hi, any clue on how to fix this one?
App builds and works fine on android but on iOS it gives a white blank screen after the splash screen.

TypeError: undefined is not an object (evaluating ‘this._objectInstance[key]’)

Are you using the SQL plugin? I’ve seen this error before with the SQL Plugin inside this thread: SQLite can’t executeSql