Link crash

Build version: 1.7.1
Build date: 1981-01-01 01:01:02
Current date: 2021-10-13 10:26:08
Device: OPPO CPH2159
OS version: Android 11 (SDK 30)

Stack trace:
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.Activity.startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int, android.os.Bundle)' on a null object reference
    at com.google.android.play.core.appupdate.d.startIntentSenderForResult(Unknown Source:9)
    at com.google.android.play.core.appupdate.e.startUpdateFlowForResult(Unknown Source:23)
    at com.google.android.play.core.appupdate.e.startUpdateFlowForResult(Unknown Source:9)
    at com.sanojpunchihewa.updatemanager.UpdateManager.startUpdate(UpdateManager.java:95)
    at com.sanojpunchihewa.updatemanager.UpdateManager.access$100(UpdateManager.java:26)
    at com.sanojpunchihewa.updatemanager.UpdateManager$1.onSuccess(UpdateManager.java:84)
    at com.sanojpunchihewa.updatemanager.UpdateManager$1.onSuccess(UpdateManager.java:77)
    at com.google.android.play.core.tasks.e.run(Unknown Source:27)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:263)
    at android.app.ActivityThread.main(ActivityThread.java:8258)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:612)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1006)

User actions:
2021-10-13 08:23:57: SplashScreen created
2021-10-13 08:23:57: SplashScreen resumed
2021-10-13 08:24:00: SplashScreen paused
2021-10-13 08:24:00: HomeScreen created
2021-10-13 08:24:00: HomeScreen resumed
2021-10-13 08:24:00: HomeScreen paused
2021-10-13 08:24:01: SplashScreen destroyed
2021-10-13 08:24:03: HomeScreen resumed
2021-10-13 08:24:16: HomeScreen paused
2021-10-13 08:24:16: ChatScreen created
2021-10-13 08:24:16: ChatScreen resumed
2021-10-13 08:24:18: ChatScreen paused
2021-10-13 08:24:18: HomeScreen resumed
2021-10-13 08:24:19: ChatScreen destroyed
2021-10-13 08:24:25: HomeScreen paused
2021-10-13 08:24:26: HomeScreen destroyed
2021-10-13 08:24:27: SplashScreen created
2021-10-13 08:24:27: SplashScreen resumed
2021-10-13 08:24:29: SplashScreen paused
2021-10-13 08:24:29: HomeScreen created
2021-10-13 08:24:29: HomeScreen resumed
2021-10-13 08:24:29: HomeScreen paused
2021-10-13 08:24:29: HomeScreen resumed
2021-10-13 08:24:29: SplashScreen destroyed
2021-10-13 08:24:44: HomeScreen paused
2021-10-13 08:24:44: ChatScreen created
2021-10-13 08:24:44: ChatScreen resumed
2021-10-13 08:24:47: ChatScreen paused
2021-10-13 08:24:47: HomeScreen resumed
2021-10-13 08:24:48: ChatScreen destroyed
2021-10-13 08:24:53: HomeScreen paused
2021-10-13 08:24:53: CreateGroupScreen created
2021-10-13 08:24:54: CreateGroupScreen resumed
2021-10-13 08:25:01: CreateGroupScreen paused
2021-10-13 08:25:01: HomeScreen resumed
2021-10-13 08:25:01: CreateGroupScreen destroyed
2021-10-13 08:25:01: HomeScreen paused
2021-10-13 08:25:02: HomeScreen destroyed
2021-10-13 10:26:03: SplashScreen created
2021-10-13 10:26:04: SplashScreen resumed
2021-10-13 10:26:06: SplashScreen paused
2021-10-13 10:26:07: HomeScreen created
2021-10-13 10:26:07: HomeScreen resumed
2021-10-13 10:26:07: HomeScreen paused