Error in android App

When someone tries to register / a registered user tries to click on courses, the app suddenly gets crashed.

When I tried with MI phone , I get the following report. Can you tell me how to rectify it ?

time: 1586357157284
msg: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean org.edx.mobile.util.Config$CourseDiscoveryConfig.isDiscoveryEnabled()' on a null object reference
stacktrace: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean org.edx.mobile.util.Config$CourseDiscoveryConfig.isDiscoveryEnabled()' on a null object reference
	at org.edx.mobile.view.MyCoursesListFragment.onLoadFinished(MyCoursesListFragment.java:157)
	at org.edx.mobile.view.MyCoursesListFragment.onLoadFinished(MyCoursesListFragment.java:44)
	at android.support.v4.app.LoaderManagerImpl$LoaderObserver.onChanged(LoaderManagerImpl.java:250)
	at android.arch.lifecycle.LiveData.considerNotify(LiveData.java:109)
	at android.arch.lifecycle.LiveData.dispatchingValue(LiveData.java:126)
	at android.arch.lifecycle.LiveData.setValue(LiveData.java:282)
	at android.arch.lifecycle.MutableLiveData.setValue(MutableLiveData.java:33)
	at android.support.v4.app.LoaderManagerImpl$LoaderInfo.setValue(LoaderManagerImpl.java:189)
	at android.support.v4.app.LoaderManagerImpl$LoaderInfo.onLoadComplete(LoaderManagerImpl.java:174)
	at android.support.v4.content.Loader.deliverResult(Loader.java:132)
	at org.edx.mobile.loader.CoursesAsyncLoader.deliverResult(CoursesAsyncLoader.java:120)
	at org.edx.mobile.loader.CoursesAsyncLoader.deliverResult(CoursesAsyncLoader.java:22)
	at android.support.v4.content.AsyncTaskLoader.dispatchOnLoadComplete(AsyncTaskLoader.java:258)
	at android.support.v4.content.AsyncTaskLoader$LoadTask.onPostExecute(AsyncTaskLoader.java:83)
	at android.support.v4.content.ModernAsyncTask.finish(ModernAsyncTask.java:490)
	at android.support.v4.content.ModernAsyncTask$InternalHandler.handleMessage(ModernAsyncTask.java:507)
	at android.os.Handler.dispatchMessage(Handler.java:107)
	at android.os.Looper.loop(Looper.java:214)
	at android.app.ActivityThread.main(ActivityThread.java:7356)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:491)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)