Link crash

Build version: 1.7.7
Build date: 1981-01-01 01:01:02
Current date: 2021-11-23 21:10:32
Device: OPPO CPH2185
OS version: Android 10 (SDK 29)

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:3532)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3687)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:140)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:100)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2230)
    at android.os.Handler.dispatchMessage(Handler.java:107)
    at android.os.Looper.loop(Looper.java:237)
    at android.app.ActivityThread.main(ActivityThread.java:7824)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:512)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1027)
Caused by: java.lang.NullPointerException
    at com.civix.link.Screen.ReceivingFileScreen.getRoomList(ReceivingFileScreen.kt:307)
    at com.civix.link.Screen.ReceivingFileScreen$initLayout$3.onRefresh(ReceivingFileScreen.kt:295)
    at com.jcodecraeer.xrecyclerview.XRecyclerView.refresh(XRecyclerView.java:274)
    at com.civix.link.Screen.ReceivingFileScreen.initLayout(ReceivingFileScreen.kt:302)
    at com.civix.link.Screen.ReceivingFileScreen.onCreate(ReceivingFileScreen.kt:194)
    at android.app.Activity.performCreate(Activity.java:7980)
    at android.app.Activity.performCreate(Activity.java:7969)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1306)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3503)
    ... 11 more

User actions:
2021-11-23 21:05:58: SplashScreen created
2021-11-23 21:05:58: LoginScreen created
2021-11-23 21:05:59: LoginScreen resumed
2021-11-23 21:05:59: SplashScreen destroyed
2021-11-23 21:06:02: LoginScreen paused
2021-11-23 21:06:02: AuthorizationManagementActivity created
2021-11-23 21:06:02: AuthorizationManagementActivity resumed
2021-11-23 21:06:02: AuthorizationManagementActivity paused
2021-11-23 21:06:55: AuthorizationManagementActivity resumed
2021-11-23 21:06:55: AuthorizationManagementActivity paused
2021-11-23 21:06:55: LoginScreen resumed
2021-11-23 21:06:55: AuthorizationManagementActivity destroyed
2021-11-23 21:06:56: LoginScreen paused
2021-11-23 21:06:57: LoginScreen destroyed
2021-11-23 21:07:59: SplashScreen created
2021-11-23 21:07:59: LoginScreen created
2021-11-23 21:07:59: LoginScreen resumed
2021-11-23 21:07:59: SplashScreen destroyed
2021-11-23 21:08:03: LoginScreen paused
2021-11-23 21:08:03: AuthorizationManagementActivity created
2021-11-23 21:08:03: AuthorizationManagementActivity resumed
2021-11-23 21:08:04: AuthorizationManagementActivity paused
2021-11-23 21:10:03: AuthorizationManagementActivity resumed
2021-11-23 21:10:03: AuthorizationManagementActivity paused
2021-11-23 21:10:03: LoginScreen resumed
2021-11-23 21:10:03: LoginScreen paused
2021-11-23 21:10:03: AuthorizationManagementActivity destroyed
2021-11-23 21:10:04: LoginScreen destroyed
2021-11-23 21:10:31: ReceivingFileScreen created