NSMutableArray* surveyQuestionList = [[NSMutableArray alloc] init];

[self.feedbackForm.questions enumerateObjectsUsingBlock:^(FeedbackFormQuestion *fq, NSUInteger idx, BOOL *stop)
{
    NSDictionary* q;
    FeedbackFormTableViewCell *cell = [self.questionsTableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:idx inSection:0]];
    if([fq.type isEqualToString:@"text"]){
         q = @{@"question": fq.question,
                             @"answer": cell.answerTextView.text};

    }
    else if([fq.type isEqualToString:@"rating"]){
        float value= 0;
        if(cell.starRatingView.value)
            value = cell.starRatingView.value;
        q = @{@"question": fq.question,
              @"answer": [NSNumber numberWithDouble:value]};
    }

    else{
        if(cell.yesButton.selectedButton){
            q = @{@"question": fq.question,
                  @"answer": cell.yesButton.selectedButton.titleLabel.text};

        }
        else{
            q = @{@"question": fq.question,
                  @"answer": @""};
        }
    }



    if(!q)
    {
        q = @{@"question": fq.question,
              @"answer": @""};
    }
    [surveyQuestionList insertObject:q atIndex:idx];
}];

2017-03-30 17:35:28.090680 FineDine[13965:213311] [aqme] 255: AQDefaultDevice (173): skipping input stream 0 0 0x0
2017-03-30 17:35:30.027 FineDine[13965:211710] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[1]'
*** First throw call stack:
(
0   CoreFoundation                      0x000000010cb90d4b __exceptionPreprocess + 171
1   libobjc.A.dylib                     0x0000000111b2521e objc_exception_throw + 48
2   CoreFoundation                      0x000000010caa715f -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 351
3   CoreFoundation                      0x000000010caa6fcb +[NSDictionary dictionaryWithObjects:forKeys:count:] + 59
4   FineDine                            0x000000010ba7a083 __44-[FDCustomFeedbackViewController submitForm]_block_invoke + 659
5   CoreFoundation                      0x000000010cb200b2 __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 114
6   CoreFoundation                      0x000000010cb1ff6f -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 239