-[DiaryEntry imageData]: unrecognized selector sent to instance 0x7fca484852a0

#import "EntryCell.h"
#import "DiaryEntry.h"

@interface EntryCell ()
@property (weak, nonatomic) IBOutlet UILabel *dateLabel;
@property (weak, nonatomic) IBOutlet UILabel *bodyLabel;

@property (weak, nonatomic) IBOutlet UILabel *locationLabel;
@property (weak, nonatomic) IBOutlet UIImageView *mainImageView;
@property (weak, nonatomic) IBOutlet UIImageView *moodImageView;

@end

@implementation EntryCell

+(CGFloat)heightForEntry:(DiaryEntry *)entry {

    const CGFloat topMargin = 35.0f;
    const CGFloat botttomMargin = 80.0f;
    const CGFloat minHeight = 106.0f;

    UIFont *font = [UIFont systemFontOfSize:[UIFont systemFontSize]];
    CGRect boundingBox = [entry.body boundingRectWithSize: CGSizeMake(210, CGFLOAT_MAX) options:(NSStringDrawingUsesFontLeading |NSStringDrawingUsesLineFragmentOrigin)attributes:@{NSFontAttributeName: font} context:nil];

    return MAX(minHeight, CGRectGetHeight(boundingBox) + topMargin + botttomMargin);
}

- (void)configureCellForEntry:(DiaryEntry *)entry {
    self.bodyLabel.text = entry.body;
    self.locationLabel.text = entry.location;

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"EEEE, MMMMM d yyyy"];

    NSDate *date = [NSDate dateWithTimeIntervalSince1970:entry.date];

    self.dateLabel.text = [dateFormatter stringFromDate:date];

    if(!entry.imageData){
        self.mainImageView.image = [UIImage imageWithData:entry.imageData];

    }else {
       self.mainImageView.image = [UIImage imageNamed:@"icn_noimage"];
    }

    if(entry.mood == DiaryEntryMoodGood){
        self.moodImageView.image = [UIImage imageNamed:@"icn_happy"];

    }else if (entry.mood == DiaryEntryMoodAverage) {
        self.moodImageView.image = [UIImage imageNamed:@"icn_average"];

    } else if (entry.mood == DiaryEntryMoodBad) {
        self.moodImageView.image = [UIImage imageNamed:@"icon_bad"];

    }
}

@end

#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>


NS_ENUM(int16_t, DiaryEntryMood) {
    DiaryEntryMoodGood = 0,
    DiaryEntryMoodAverage =1,
    DiaryEntryMoodBad = 2

};

@interface DiaryEntry : NSManagedObject

@property (nonatomic) NSTimeInterval date;
@property (nonatomic, retain) NSString * body;
@property (nonatomic, retain) NSData * imageData;
@property (nonatomic) int16_t mood;
@property (nonatomic, retain) NSString * location;


@property(nonatomic, readonly) NSString *sectionName;

@end

#import "DiaryEntry.h"


@implementation DiaryEntry

@dynamic date;
@dynamic body;
@dynamic imageData;
@dynamic mood;
@dynamic location;

-(NSString *)sectionName {

    NSDate *date = [NSDate dateWithTimeIntervalSinceNow:self.date];

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

    [dateFormatter setDateFormat:@"MMM yyyy"];

    return [dateFormatter stringFromDate:date];
}

@end

- (NSPersistentStoreCoordinator *)persistentStoreCoordinator {
    // The persistent store coordinator for the application. This implementation creates and return a coordinator, having added the store for the application to it.
    if (_persistentStoreCoordinator != nil) {
        return _persistentStoreCoordinator;
    }

    // Create the coordinator and store

    _persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
    NSURL *storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"Diary.sqlite"];
    NSError *error = nil;
    NSString *failureReason = @"There was an error creating or loading the application's saved data.";
    if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error]) {
        // Report any error we got.
        NSMutableDictionary *dict = [NSMutableDictionary dictionary];
        dict[NSLocalizedDescriptionKey] = @"Failed to initialize the application's saved data";
        dict[NSLocalizedFailureReasonErrorKey] = failureReason;
        dict[NSUnderlyingErrorKey] = error;
        error = [NSError errorWithDomain:@"YOUR_ERROR_DOMAIN" code:9999 userInfo:dict];
        // Replace this with code to handle the error appropriately.
        // abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
        NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
        abort();
    }

    return _persistentStoreCoordinator;
}

int main(int argc, char * argv[]) {
    @autoreleasepool {
        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); 
    }
}