Unable to Populate TableView In PopOverController - Objective C

Question

I have a UIButton called as UploadButton. I am using the following lines of code which takes care of the action which should happen on clicking it ::

Answer 1

That error means that you're passing an invalid argument when you're assigning a value to keys1, self.keys1 = .... If you're, e.g., passing a NSMutableArray to an NSDictionary property, you'll get that error.