error1

2019-04-22 09:16:44.466 7333-7333/com.example.uniplanner E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.uniplanner, PID: 7333
    java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { (has extras) }} to activity {com.example.uniplanner/com.example.uniplanner.tower.RoomActivity}: java.lang.IllegalStateException
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4268)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4312)
        at android.app.ActivityThread.-wrap19(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1644)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6494)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
     Caused by: java.lang.IllegalStateException
        at com.example.uniplanner.persistence.PlanDatabase.get(PlanDatabase.java:25)
        at com.example.uniplanner.program.Profile.onSelect(Profile.java:31)
        at com.example.uniplanner.tower.RoomActivity.onActivityResult(RoomActivity.java:44)
        at android.app.Activity.dispatchActivityResult(Activity.java:7276)
        at android.app.ActivityThread.deliverResults(ActivityThread.java:4264)
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4312)
        at android.app.ActivityThread.-wrap19(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1644)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6494)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)