Link crash

Build version: 1.7.8
Build date: 1981-01-01 01:01:02
Current date: 2021-12-30 16:21:06
Device: OPPO CPH2059
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$1.onSuccess(UpdateManager.java:77)
    at com.google.android.play.core.tasks.e.run(Unknown Source:27)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:263)
    at android.app.ActivityThread.main(ActivityThread.java:8283)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:612)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1006)

User actions:
2021-12-30 09:42:43: SplashScreen created
2021-12-30 09:42:43: SplashScreen resumed
2021-12-30 09:42:55: SplashScreen paused
2021-12-30 09:42:55: HomeScreen created
2021-12-30 09:42:55: HomeScreen resumed
2021-12-30 09:42:56: SplashScreen destroyed
2021-12-30 09:42:56: HomeScreen paused
2021-12-30 09:42:56: HomeScreen resumed
2021-12-30 09:42:57: HomeScreen paused
2021-12-30 09:43:02: HomeScreen resumed
2021-12-30 09:43:08: HomeScreen paused
2021-12-30 09:43:08: WebViewScreen created
2021-12-30 09:43:08: WebViewScreen resumed
2021-12-30 09:43:53: WebViewScreen paused
2021-12-30 09:43:53: HomeScreen resumed
2021-12-30 09:43:54: WebViewScreen destroyed
2021-12-30 09:43:55: HomeScreen paused
2021-12-30 09:43:55: HomeScreen destroyed
2021-12-30 12:35:30: SplashScreen created
2021-12-30 12:35:30: SplashScreen resumed
2021-12-30 12:35:32: SplashScreen paused
2021-12-30 12:35:32: HomeScreen created
2021-12-30 12:35:32: HomeScreen resumed
2021-12-30 12:35:33: SplashScreen destroyed
2021-12-30 12:35:33: HomeScreen paused
2021-12-30 12:35:33: HomeScreen resumed
2021-12-30 12:35:37: HomeScreen paused
2021-12-30 12:35:37: HomeScreen destroyed
2021-12-30 16:20:56: SplashScreen created
2021-12-30 16:20:56: SplashScreen resumed
2021-12-30 16:21:03: SplashScreen paused
2021-12-30 16:21:03: HomeScreen created
2021-12-30 16:21:04: HomeScreen resumed
2021-12-30 16:21:04: HomeScreen paused
2021-12-30 16:21:04: SplashScreen destroyed
2021-12-30 16:21:04: HomeScreen resumed