Fix NSInvalidArgumentException in main, line 16

[blackgold9]

Version: 1.0 (47)

Stacktrace

-;main;main.m;16

Reason

NSInvalidArgumentException, reason: -[NSObject performFetch]: unrecognized selector sent to instance

Link to HockeyApp

• https://rink.hockeyapp.net/manage/apps/3155/crash_reasons/340607