App crashing on deleting images

[sonusourav]

Describe the bug
The app crashes when we press the delete icon in the action bar inside any folder. I have observed that some files get deleted while some not. Also, there is no problem if one image is present.

To Reproduce

1. Go to Gallery
2. Click on any folder
3. Click on delete icon on action bar
4. App crashes

Expected behavior
All the photos should get deleted.

Logs

2020-01-16 14:52:41.181 11408-11901/org.fossasia.phimpme E/AndroidRuntime: FATAL EXCEPTION: AsyncTask 5
Process: org.fossasia.phimpme, PID: 11408
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:325)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:760)
Caused by: io.realm.exceptions.RealmPrimaryKeyConstraintException: Primary key value already exists: /storage/emulated/0/.nomedia/IMG-20200116-WA0000.jpg .
(/Users/cm/Realm/realm-java-release/realm/realm-library/src/main/cpp/io_realm_internal_OsObject.cpp:237)
at io.realm.internal.OsObject.nativeCreateNewObjectWithStringPrimaryKey(Native Method)
at io.realm.internal.OsObject.createWithPrimaryKey(OsObject.java:202)
at io.realm.Realm.createObjectInternal(Realm.java:1049)
at io.realm.Realm.createObject(Realm.java:1024)
at org.fossasia.phimpme.gallery.activities.LFMainActivity.addTrashObjectsToRealm(LFMainActivity.java:3546)
at org.fossasia.phimpme.gallery.activities.LFMainActivity.access$4300(LFMainActivity.java:146)
at org.fossasia.phimpme.gallery.activities.LFMainActivity$1DeletePhotos.doInBackground(LFMainActivity.java:2159)
at org.fossasia.phimpme.gallery.activities.LFMainActivity$1DeletePhotos.doInBackground(LFMainActivity.java:2034)
at android.os.AsyncTask$2.call(AsyncTask.java:305)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
... 4 more

Screenshots

Smartphone Info:

Device: Redmi 4
Android Version: Android Nougat

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