Link crash

Build version: 1.8.8.1
Build date: 1981-01-01 01:01:02
Current date: 2022-09-08 09:32:08
Device: Vsmart Star 5
OS version: Android 11 (SDK 30)

Stack trace:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.civix.link/com.civix.link.Screen.ReceivingFileScreen}: java.lang.NullPointerException
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3474)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3638)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2106)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:223)
    at android.app.ActivityThread.main(ActivityThread.java:7705)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:612)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:997)
Caused by: java.lang.NullPointerException
    at java.io.File.<init>(File.java:283)
    at com.civix.link.Screen.ReceivingFileScreen.handleFileIntent(ReceivingFileScreen.kt:226)
    at com.civix.link.Screen.ReceivingFileScreen.onCreate(ReceivingFileScreen.kt:195)
    at android.app.Activity.performCreate(Activity.java:8000)
    at android.app.Activity.performCreate(Activity.java:7984)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3447)
    ... 11 more

User actions:
2022-09-08 09:13:34: SplashScreen created
2022-09-08 09:13:34: SplashScreen resumed
2022-09-08 09:13:35: SplashScreen paused
2022-09-08 09:13:35: HomeScreen created
2022-09-08 09:13:35: HomeScreen resumed
2022-09-08 09:13:36: SplashScreen destroyed
2022-09-08 09:13:37: HomeScreen paused
2022-09-08 09:13:37: ChatScreen created
2022-09-08 09:13:37: ChatScreen resumed
2022-09-08 09:20:10: ChatScreen paused
2022-09-08 09:20:10: HomeScreen resumed
2022-09-08 09:20:11: ChatScreen destroyed
2022-09-08 09:20:11: HomeScreen paused
2022-09-08 09:20:12: HomeScreen destroyed
2022-09-08 09:32:07: ReceivingFileScreen created