java.lang.RuntimeException: Unable to resume activity {com.example2.auto_home_project/com.example2.auto_home_project.Rooms}: java.lang.NullPointerException

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Unable to resume activity {com.example2.auto_home_project/com.example2.auto_home_project.Rooms}: java.lang.NullPointerException
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Unable to resume activity {com.example.project/com.example.project.MainActivity}: java.lang.NullPointerException
java.lang.RuntimeException: Unable to resume activity {com.example2.auto_home_project/com.example2.auto_home_project.Rooms}: java.lang.NullPointerException
at com.example2.auto_home_project.Rooms.onResume(Rooms.java:189)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1192)
at android.app.Activity.performResume(Activity.java:5310)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2778)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2817)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2250)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)

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