App crash when uploading video

[edcastrahul]

getting below crash log.
java.io.IOException:
at com.filestack.internal.Upload.reduceChunkSize()(Upload.java:114)
at com.filestack.internal.UploadTransferFunc$2.onNetworkFail()(UploadTransferFunc.java:104)
at com.filestack.internal.RetryNetworkFunc.run()(RetryNetworkFunc.java:51)
at com.filestack.internal.RetryNetworkFunc.call()(RetryNetworkFunc.java:34)
at com.filestack.internal.UploadTransferFunc.uploadToS3()(UploadTransferFunc.java:121)
at com.filestack.internal.UploadTransferFunc.subscribe()(UploadTransferFunc.java:38)
at io.reactivex.internal.operators.flowable.FlowableCreate.subscribeActual()(FlowableCreate.java:72)
at io.reactivex.Flowable.subscribe()(Flowable.java:14409)
at io.reactivex.Flowable.subscribe()(Flowable.java:14356)
at io.reactivex.internal.operators.flowable.FlowableSubscribeOn$SubscribeOnSubscriber.run()(FlowableSubscribeOn.java:82)
at io.reactivex.internal.schedulers.ScheduledRunnable.run()(ScheduledRunnable.java:66)
at io.reactivex.internal.schedulers.ScheduledRunnable.call()(ScheduledRunnable.java:57)
at java.util.concurrent.FutureTask.run()(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run()(ScheduledThreadPoolExecutor.java:301)
at java.util.concurrent.ThreadPoolExecutor.runWorker()(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run()(ThreadPoolExecutor.java:636)
at java.lang.Thread.run()(Thread.java:764)

thread 13179 - OkHttp lms.edcast.io Writer:
java.lang.Object.wait()(Object.java:-2)
java.lang.Thread.parkFor$()(Thread.java:2137)
sun.misc.Unsafe.park()(Unsafe.java:358)
java.util.concurrent.locks.LockSupport.park()(LockSupport.java:190)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await()(AbstractQueuedSynchronizer.java:2059)
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take()(ScheduledThreadPoolExecutor.java:1120)
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take()(ScheduledThreadPoolExecutor.java:1113)
java.util.concurrent.ThreadPoolExecutor.getTask()(ThreadPoolExecutor.java:1087)
java.util.concurrent.ThreadPoolExecutor.runWorker()(ThreadPoolExecutor.java:1147)
java.util.concurrent.ThreadPoolExecutor$Worker.run()(ThreadPoolExecutor.java:636)
java.lang.Thread.run()(Thread.java:764)

thread 13001 - RxScheduledExecutorPool-2:
java.lang.Object.wait()(Object.java:-2)
java.lang.Thread.parkFor$()(Thread.java:2137)
sun.misc.Unsafe.park()(Unsafe.java:358)
java.util.concurrent.locks.LockSupport.parkNanos()(LockSupport.java:230)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos()(AbstractQueuedSynchronizer.java:2101)
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take()(ScheduledThreadPoolExecutor.java:1132)
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take()(ScheduledThreadPoolExecutor.java:1113)
java.util.concurrent.ThreadPoolExecutor.getTask()(ThreadPoolExecutor.java:1087)
java.util.concurrent.ThreadPoolExecutor.runWorker()(ThreadPoolExecutor.java:1147)
java.util.concurrent.ThreadPoolExecutor$Worker.run()(ThreadPoolExecutor.java:636)
java.lang.Thread.run()(Thread.java:764)

thread 13040 - OkHttp ConnectionPool:
java.lang.Object.wait()(Object.java:-2)
okhttp3.ConnectionPool$1.run()(ConnectionPool.java:67)
java.util.concurrent.ThreadPoolExecutor.runWorker()(ThreadPoolExecutor.java:1162)
java.util.concurrent.ThreadPoolExecutor$Worker.run()(ThreadPoolExecutor.java:636)
java.lang.Thread.run()(Thread.java:764)

thread 12918 - ReferenceQueueDaemon:
java.lang.Object.wait()(Object.java:-2)
java.lang.Daemons$ReferenceQueueDaemon.runInternal()(Daemons.java:178)
java.lang.Daemons$Daemon.run()(Daemons.java:103)
java.lang.Thread.run()(Thread.java:764)

thread 12954 - OkHttp ConnectionPool:
java.lang.Object.wait()(Object.java:-2)
com.android.okhttp.ConnectionPool$1.run()(ConnectionPool.java:101)
java.util.concurrent.ThreadPoolExecutor.runWorker()(ThreadPoolExecutor.java:1162)
java.util.concurrent.ThreadPoolExecutor$Worker.run()(ThreadPoolExecutor.java:636)
java.lang.Thread.run()(Thread.java:764)