images not appearing in react native ios

1// Add this in RCTUIImageViewAnimated.m
2
3// .
4// .
5// .
6// previous code.
7#pragma mark - CALayerDelegate
8
9- (void)displayLayer:(CALayer *)layer
10{
11    if (_currentFrame) {
12        layer.contentsScale = self.animatedImageScale;
13        layer.contents = (__bridge id)_currentFrame.CGImage;
14      } 
15  else {[super displayLayer:layer];}  // <---- add this 
16      
17}