lottie-android: JSON Reader AssertionError when doInBackground (Android 7, 8)

Hi guys, in latest Lottie Android version (2.5.0) we are having several crashes at doInBackground() method. This crash is only happening on Android 7 and 8 versions.

Here is our animation preloading code:

class LottieAnimations {

    companion object {

        @JvmStatic
        var willyWaiting: LottieAnimation? = null
        var specialBonusCollectCoins: LottieAnimation? = null
        var specialBonusCollectGems: LottieAnimation? = null

        @JvmStatic
        fun load(context: Context) {
            fromAssetFileName(context, "animation/waiting_lottie/data.json") {
                it?.let { willyWaiting = LottieAnimation(it, "animation/waiting_lottie/images") }
            }

            fromAssetFileName(context, "animation/special_bonus_collect_coins/data.json") {
                it?.let { specialBonusCollectCoins = LottieAnimation(it, "animation/special_bonus_collect_coins/images") }
            }

            fromAssetFileName(context, "animation/special_bonus_collect_gems/data.json") {
                it?.let { specialBonusCollectGems = LottieAnimation(it, "animation/special_bonus_collect_gems/images") }
            }
        }
    }

}

Here is the StackTrace:

OS Version: 8.0.0 Device: Xperia X RAM Free: 38.5% Disk Free: 60.8%

#0. Crashed: AsyncTask #4 at android.os.AsyncTask$3.done(AsyncTask.java:353) at java.#util.concurrent.FutureTask.finishCompletion(FutureTask.java:383) at java.util.concurrent.FutureTask.setException(FutureTask.java:252) at java.util.concurrent.FutureTask.run(FutureTask.java:271) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) at java.lang.Thread.run(Thread.java:764)

–

Fatal Exception: java.lang.RuntimeException: An error occurred while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:353) at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383) at java.util.concurrent.FutureTask.setException(FutureTask.java:252) at java.util.concurrent.FutureTask.run(FutureTask.java:271) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) at java.lang.Thread.run(Thread.java:764)

Caused by java.lang.AssertionError at android.util.JsonReader.peek(JsonReader.java:363) at android.util.JsonReader.expect(JsonReader.java:308) at android.util.JsonReader.beginObject(JsonReader.java:293) at com.airbnb.lottie.parser.LottieCompositionParser.parse(SourceFile:42) at com.airbnb.lottie.LottieComposition$Factory.fromJsonSync(SourceFile:269) at com.airbnb.lottie.parser.AsyncCompositionLoader.doInBackground(SourceFile:22) at com.airbnb.lottie.parser.AsyncCompositionLoader.doInBackground(SourceFile:12) at android.os.AsyncTask$2.call(AsyncTask.java:333) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) at java.lang.Thread.run(Thread.java:764)

#0. Crashed: AsyncTask #4 at android.os.AsyncTask$3.done(AsyncTask.java:353) at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383) at java.util.concurrent.FutureTask.setException(FutureTask.java:252) at java.util.concurrent.FutureTask.run(FutureTask.java:271) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) at java.lang.Thread.run(Thread.java:764)

#1. pool-2-thread-1 at java.lang.Object.wait(Object.java) at java.lang.Thread.parkFor$(Thread.java:2135) at sun.misc.Unsafe.park(Unsafe.java:358) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:230) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2101) at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1132) at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1113) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1087) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) at java.lang.Thread.run(Thread.java:764)

#2. httpThread at android.os.MessageQueue.nativePollOnce(MessageQueue.java) at android.os.MessageQueue.next(MessageQueue.java:375) at android.os.Looper.loop(Looper.java:225) at android.os.HandlerThread.run(HandlerThread.java:65)

#3. ConnectivityThread at android.os.MessageQueue.nativePollOnce(MessageQueue.java) at android.os.MessageQueue.next(MessageQueue.java:375) at android.os.Looper.loop(Looper.java:225) at android.os.HandlerThread.run(HandlerThread.java:65)

#4. pool-3-thread-1 at java.lang.Object.wait(Object.java) at java.lang.Thread.parkFor$(Thread.java:2135) at sun.misc.Unsafe.park(Unsafe.java:358) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:190) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2059) at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1120) at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1113) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1087) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1147) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) at java.lang.Thread.run(Thread.java:764)

Any ideas?

Tnx in advance