RuntimeException when Activity was killed in background and try to reopen it

[WebShaper]

I get a RuntimeException when:

Enabling the Settings > System > Developer options > Don’t keep activities option. The activity gets killed when leaving it.
Open the app and open the view with all emoji Icons.
Press Home button to leave the app.
Reopen the App.

It only happens when to Popup is open.

java.lang.RuntimeException: An error occurred while executing doInBackground()
    at android.os.AsyncTask$3.done(AsyncTask.java:353)
    at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
    at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
    at java.util.concurrent.FutureTask.run(FutureTask.java:271)
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
    at java.lang.Thread.run(Thread.java:764)
 Caused by: java.lang.RuntimeException: Set GIF provider.
    at com.kevalpatel2106.emoticongifkeyboard.internal.gif.GifFragment$TrendingGifTask.doInBackground(GifFragment.java:214)
    at com.kevalpatel2106.emoticongifkeyboard.internal.gif.GifFragment$TrendingGifTask.doInBackground(GifFragment.java:201)
    at android.os.AsyncTask$2.call(AsyncTask.java:333)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) 
    at java.lang.Thread.run(Thread.java:764) 

[karanianandkumar]

@WebShaper did you get a solution? I am facing the same issue, even though I pass null for gifconfig while initialization.