xcode8.1:invalid mode 'kCFRunLoopCommonModes' provided to CFRunLoopRunSpecific - break on _CFRunLoopError_RunCalledWithInvalidMode to debug

Question

I write the code below:

JSImgDeleteCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:displayCellID forIndexPath:indexPath];
         


        

Answer 1

In my case, I accidentally added two reference to the same Xib constraint. Removed one and it works well.