crash in landscape mode when pressing "movie watched"

PROJECT INFO

https://github.com/marcelgross90/Cineaste
app name : cinetaste

EXPECTED BEHAVIOR

this application should allow users to use various features in different screen states

ACTUAL BEHAVIOR
when the user presses the "movie watched" button in landscape mode this application will crash

HOW TO REPPRODUCE

• download cinetaste from playstore
• launch the app
• click the + button
• Choose any movie
• change your phone's mode of mode from portrait mode to landscape mode and select "movies watched" button and record the bug

device : j5 prime android 7.0
browser : cinetaste v2.4.0

PROOF OF WORK DONE

https://github.com/marcelgross90/Cineaste/issues/29

bug recording

log cat file

Process: de.cineaste.android, PID: 14059
java.lang.RuntimeException: Unable to start activity ComponentInfo{de.cineaste.android/de.cineaste.android.activity.MovieSearchActivity}: java.lang.IllegalStateException: savedInstanceState.getString("query", null) must not be null
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2367)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2429)
at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4038)
at android.app.ActivityThread.access$900(ActivityThread.java:157)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1325)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5376)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:947)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:742)
Caused by: java.lang.IllegalStateException: savedInstanceState.getString("query", null) must not be null
at de.cineaste.android.activity.AbstractSearchActivity.onCreate(Unknown Source)
at android.app.Activity.performCreate(Activity.java:6012)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2311)```