NullPointerException in ResourceRequestHandler

[runningcode]

This crash happens often for our users but I can't seem to repro it. The crash seems to have only started happening after we started using Picasso to load contact images. We can't seem to figure out how Picasso could get in to this state.
For reference: we are using Picasso 2.5.2

java.lang.NullPointerException
       at com.squareup.picasso.ResourceRequestHandler.canHandleRequest(ResourceRequestHandler.java:39)
       at com.squareup.picasso.BitmapHunter.forRequest(BitmapHunter.java:416)
       at com.squareup.picasso.Dispatcher.performSubmit(Dispatcher.java:201)
       at com.squareup.picasso.Dispatcher.performSubmit(Dispatcher.java:175)
       at com.squareup.picasso.Dispatcher$DispatcherHandler.handleMessage(Dispatcher.java:482)
       at android.os.Handler.dispatchMessage(Handler.java:102)
       at android.os.Looper.loop(Looper.java:136)
       at android.os.HandlerThread.run(HandlerThread.java:61)

[f2prateek]

What does the code you are calling Picasso with look like?

[runningcode]

We use picasso to load images all over our app from the network, local resources and contact URIs, so I'm not sure which one is causing this NPE but the contact image loading code looks like something like this:

Uri baseUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, contactId);
Uri fullContactUri = Uri.withAppendedPath(baseUri, ContactsContract.Contacts.Photo.CONTENT_DIRECTORY);
if (fullContactUri != null) {
    picasso.load(fullContactUri).into(view);
}

our Picasso instance looks like this:

Picasso picasso = new Picasso.Builder(app)
                .downloader(new OkHttpDownloader(client))
                .listener(new Picasso.Listener() {
                    @Override
                    public void onImageLoadFailed(Picasso picasso, Uri uri, Exception exception) {
                        Utils.reportWarning(exception, "loading image " + uri);
                    }
                })
                .build();
Picasso.setSingletonInstance(picasso);

Do you need any other details?