Link crash

Build version: 1.7.9
Build date: 1981-01-01 01:01:02
Current date: 2022-01-10 15:40:26
Device: Samsung SM-A530F
OS version: Android 9 (SDK 28)

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$1.onSuccess(UpdateManager.java:77)
    at com.google.android.play.core.tasks.e.run(Unknown Source:27)
    at android.os.Handler.handleCallback(Handler.java:873)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:214)
    at android.app.ActivityThread.main(ActivityThread.java:7078)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)

User actions:
2022-01-10 15:37:19: SplashScreen created
2022-01-10 15:37:19: SplashScreen resumed
2022-01-10 15:37:20: SplashScreen paused
2022-01-10 15:37:20: HomeScreen created
2022-01-10 15:37:21: HomeScreen resumed
2022-01-10 15:37:21: SplashScreen destroyed
2022-01-10 15:37:22: HomeScreen paused
2022-01-10 15:37:27: HomeScreen resumed
2022-01-10 15:37:29: HomeScreen paused
2022-01-10 15:37:29: ChatScreen created
2022-01-10 15:37:29: ChatScreen resumed
2022-01-10 15:37:31: ChatScreen paused
2022-01-10 15:37:31: BoardScreen created
2022-01-10 15:37:31: BoardScreen resumed
2022-01-10 15:37:37: BoardScreen paused
2022-01-10 15:37:37: WebViewScreen created
2022-01-10 15:37:37: WebViewScreen resumed
2022-01-10 15:37:56: WebViewScreen paused
2022-01-10 15:37:56: BoardScreen resumed
2022-01-10 15:37:57: WebViewScreen destroyed
2022-01-10 15:37:59: BoardScreen paused
2022-01-10 15:37:59: ChatScreen resumed
2022-01-10 15:38:00: BoardScreen destroyed
2022-01-10 15:38:01: ChatScreen paused
2022-01-10 15:38:01: HomeScreen resumed
2022-01-10 15:38:02: ChatScreen destroyed
2022-01-10 15:38:02: HomeScreen paused
2022-01-10 15:38:03: HomeScreen destroyed
2022-01-10 15:40:24: SplashScreen created
2022-01-10 15:40:24: SplashScreen resumed
2022-01-10 15:40:24: SplashScreen paused
2022-01-10 15:40:24: HomeScreen created
2022-01-10 15:40:24: HomeScreen resumed
2022-01-10 15:40:25: SplashScreen destroyed