'+entityForName: nil is not a legal NSManagedObjectContext parameter - Core Data
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I have added all of the relevant code to the App Delegate, and I am able to add to the data model and fetch from the data model in applicationDidFinishLaunchingWithOptions.

My problem comes when I am trying to write to the data model in my View Controller. I have added this code to the header file:

    NSFetchedResultsController *fetchedResultsController;
    NSManagedObjectContext *managedObjectContext;

    @property (nonatomic, retain) NSFetchedResultsController *fetchedResultsController;
    @property (nonatomic, retain) NSManagedObjectContext *managedObjectContext;

And this code to my implementation file:

    NSManagedObjectContext *context = [self managedObjectContext];
    NSManagedObject *model = [NSEntityDescription
                              insertNewObjectForEntityForName:@"Events" 
                              inManagedObjectContext:context];
    [model setValue:@"Sample Event" forKey:@"eventName"];
    
    NSError *error;
    if (![context save:&error]) {
        NSLog(@"Couldn't save: %@", [error localizedDescription]);
    }

However, I get the following error:

    'NSInvalidArgumentException', reason: '+entityForName: nil is not a legal NSManagedObjectContext parameter searching for entity name 'Events''

Does anyone know what's going on? Any help would be appreciated.