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Firebase snapshot doesn't exist

Log.d("ıd check",subCatId+catId); database.getReference().child("categories").child(catId) .child("subCategories").child(subCatId) .child("questions").addValueEventListener(new ValueEventListener() { @Override public void onDataChange(@NonNull DataSnapshot snapshot) { if (snapshot.exists()) { Log.d("exixtance","DOES EXİSTS"); timer.start(); for (DataSnapshot dataSnapshot : snapshot.getChildren()) { prossesdata(dataSnapshot); loadingdialog.dismiss(); } if (list.size() > 0) { for (int i = 0; i…

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