conference call cant work

[wjhtinger]

cant lounch conference all, and below is log:
Process: im.vector.alpha, PID: 17510
java.lang.RuntimeException: Unable to start activity ComponentInfo{im.vector.alpha/im.vector.activity.JitsiCallActivity}: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.settings.action.MANAGE_OVERLAY_PERMISSION dat=package:im.vector.alpha }
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2464)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2536)
at android.app.ActivityThread.access$900(ActivityThread.java:159)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1353)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5500)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.settings.action.MANAGE_OVERLAY_PERMISSION dat=package:im.vector.alpha }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1805)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1514)
at android.app.Activity.startActivityForResult(Activity.java:3970)
at android.support.v4.app.BaseFragmentActivityApi16.startActivityForResult(BaseFragmentActivityApi16.java:54)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:68)
at android.app.Activity.startActivityForResult(Activity.java:3931)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:751)
at im.vector.activity.JitsiCallActivity.initUiAndData(JitsiCallActivity.java:164)
at im.vector.activity.VectorAppCompatActivity.onCreate(VectorAppCompatActivity.kt:95)
at android.app.Activity.performCreate(Activity.java:6292)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2536) 
at android.app.ActivityThread.access$900(ActivityThread.java:159) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1353) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5500) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

[bmarty]

Done