fix: preload source uri empty crash (#8)

Author: deepanshushuklad11

android/src/main/java/com/dylanvann/fastimage/FastImageViewModule.java

@@ -38,7 +38,10 @@ public void run() {
                 for (int i = 0; i < sources.size(); i++) {
                     final ReadableMap source = sources.getMap(i);
                     final FastImageSource imageSource = FastImageViewConverter.getImageSource(activity, source);
-
+                    if (source == null || !source.hasKey("uri") || source.getString("uri").isEmpty()) {
+                            System.out.println("Source is null or URI is empty");
+                            continue;
+                          }
                     Glide
                             .with(activity.getApplicationContext())
                             // This will make this work for remote and local images. e.g.