Program: 70543
Project: 70543
Buggy source:
@Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater,@Nullable ViewGroup container,@Nullable Bundle savedInstanceState){
  bind=FragmentProfileBinding.inflate(inflater,container,false);
  auth=FirebaseAuth.getInstance();
  db=FirebaseDatabase.getInstance();
  adapter=new ListAdapter(getContext(),getActivity(),bind.postList,new OnLikeCallback(){
    @Override public void onLike(    final String postId){
      db.getReference().child("String_Node_Str").child(postId).child("String_Node_Str").addListenerForSingleValueEvent(new ValueEventListener(){
        @Override public void onDataChange(        DataSnapshot dataSnapshot){
          for (          DataSnapshot data : dataSnapshot.getChildren())           if (auth.getCurrentUser().getUid().equals((String)data.getValue()))           return;
          db.getReference().child("String_Node_Str").child(postId).child("String_Node_Str").push().setValue(auth.getCurrentUser().getUid());
          db.getReference().child("String_Node_Str").child(postId).child("String_Node_Str").addListenerForSingleValueEvent(new ValueEventListener(){
            @Override public void onDataChange(            DataSnapshot dataSnapshot){
              final long x=(long)dataSnapshot.getValue() + 1;
              db.getReference().child("String_Node_Str").child(postId).child("String_Node_Str").setValue(x).addOnCompleteListener(new OnCompleteListener<Void>(){
                @Override public void onComplete(                @NonNull Task<Void> task){
                  adapter.updateLike(postId,x);
                }
              }
);
            }
            @Override public void onCancelled(            DatabaseError databaseError){
            }
          }
);
        }
        @Override public void onCancelled(        DatabaseError databaseError){
        }
      }
);
    }
  }
);
  if (childEventListener == null) {
    childEventListener=new ChildEventListener(){
      @Override public void onChildAdded(      DataSnapshot dataSnapshot,      String s){
        db.getReference().child("String_Node_Str").child((String)dataSnapshot.getValue()).addListenerForSingleValueEvent(new ValueEventListener(){
          @Override public void onDataChange(          DataSnapshot dataSnapshot){
            BlogPost post=dataSnapshot.getValue(BlogPost.class);
            post.setId(dataSnapshot.getKey());
            adapter.addPost(post);
          }
          @Override public void onCancelled(          DatabaseError databaseError){
          }
        }
);
      }
      @Override public void onChildChanged(      DataSnapshot dataSnapshot,      String s){
      }
      @Override public void onChildRemoved(      DataSnapshot dataSnapshot){
      }
      @Override public void onChildMoved(      DataSnapshot dataSnapshot,      String s){
      }
      @Override public void onCancelled(      DatabaseError databaseError){
      }
    }
;
    db.getReference().child("String_Node_Str").child(auth.getCurrentUser().getUid()).child("String_Node_Str").addChildEventListener(childEventListener);
  }
  bind.postList.setLayoutManager(new LinearLayoutManager(getContext()));
  bind.postList.setAdapter(adapter);
  bind.addPost.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      if (user == null)       return;
      AlertDialog.Builder builder=new AlertDialog.Builder(ProfileFragment.this.getContext());
      View view=getLayoutInflater().inflate(R.layout.dialog_add_post,null);
      final EditText content=(EditText)view.findViewById(R.id.content);
      final TextView post=(TextView)view.findViewById(R.id.post);
      builder.setView(view);
      final AlertDialog d=builder.create();
      d.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
      d.show();
      post.setOnClickListener(new View.OnClickListener(){
        @Override public void onClick(        View v){
          d.cancel();
          createPost(content.getText().toString());
        }
      }
);
    }
  }
);
  dialog=new ProgressDialog(getContext());
  dialog.setMessage(getResources().getString(R.string.loading));
  dialog.setCancelable(false);
  runningDialog=true;
  dialog.show();
  db.getReference().child("String_Node_Str").child(auth.getCurrentUser().getUid()).addListenerForSingleValueEvent(new ValueEventListener(){
    @Override public void onDataChange(    DataSnapshot dataSnapshot){
      user=dataSnapshot.getValue(User.class);
      if (user == null) {
        auth.signOut();
        getActivity().finish();
        startActivity(new Intent(getContext(),SigninActivity.class));
        return;
      }
      user.setUid(auth.getCurrentUser().getUid());
      bind.userEmail.setText(user.getEmail());
      bind.userName.setText(user.getName());
      if (user.getPhoto_url() != null)       Picasso.with(getActivity()).load(user.getPhoto_url()).into(bind.photo);
      dialog.cancel();
      runningDialog=false;
      Toast.makeText(getContext(),getResources().getString(R.string.welcome),Toast.LENGTH_SHORT).show();
    }
    @Override public void onCancelled(    DatabaseError databaseError){
      dialog.cancel();
      Toast.makeText(getContext(),getResources().getString(R.string.error),Toast.LENGTH_SHORT).show();
    }
  }
);
  String userEmail="String_Node_Str";
  if (auth.getCurrentUser().getEmail() != null)   userEmail=auth.getCurrentUser().getEmail();
 else   userEmail=auth.getCurrentUser().getPhoneNumber();
  bind.userEmail.setText(userEmail);
  bind.logout.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      auth.signOut();
      startActivity(new Intent(getContext(),SigninActivity.class));
      getActivity().finish();
    }
  }
);
  return bind.getRoot();
}

Fixed version (ground truth):
@Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater,@Nullable ViewGroup container,@Nullable Bundle savedInstanceState){
  bind=FragmentProfileBinding.inflate(inflater,container,false);
  auth=FirebaseAuth.getInstance();
  db=FirebaseDatabase.getInstance();
  adapter=new ListAdapter(getContext(),getActivity(),bind.postList,new OnLikeCallback(){
    @Override public void onLike(    final String postId){
      db.getReference().child("String_Node_Str").child(postId).child("String_Node_Str").addListenerForSingleValueEvent(new ValueEventListener(){
        @Override public void onDataChange(        DataSnapshot dataSnapshot){
          for (          DataSnapshot data : dataSnapshot.getChildren())           if (auth.getCurrentUser().getUid().equals((String)data.getValue()))           return;
          db.getReference().child("String_Node_Str").child(postId).child("String_Node_Str").push().setValue(auth.getCurrentUser().getUid());
          db.getReference().child("String_Node_Str").child(postId).child("String_Node_Str").addListenerForSingleValueEvent(new ValueEventListener(){
            @Override public void onDataChange(            DataSnapshot dataSnapshot){
              final long x=(long)dataSnapshot.getValue() + 1;
              db.getReference().child("String_Node_Str").child(postId).child("String_Node_Str").setValue(x).addOnCompleteListener(new OnCompleteListener<Void>(){
                @Override public void onComplete(                @NonNull Task<Void> task){
                  adapter.updateLike(postId,x);
                }
              }
);
            }
            @Override public void onCancelled(            DatabaseError databaseError){
            }
          }
);
        }
        @Override public void onCancelled(        DatabaseError databaseError){
        }
      }
);
    }
  }
);
  if (childEventListener == null) {
    childEventListener=new ChildEventListener(){
      @Override public void onChildAdded(      DataSnapshot dataSnapshot,      String s){
        db.getReference().child("String_Node_Str").child((String)dataSnapshot.getValue()).addListenerForSingleValueEvent(new ValueEventListener(){
          @Override public void onDataChange(          DataSnapshot dataSnapshot){
            BlogPost post=dataSnapshot.getValue(BlogPost.class);
            post.setId(dataSnapshot.getKey());
            adapter.addPost(post);
          }
          @Override public void onCancelled(          DatabaseError databaseError){
          }
        }
);
      }
      @Override public void onChildChanged(      DataSnapshot dataSnapshot,      String s){
      }
      @Override public void onChildRemoved(      DataSnapshot dataSnapshot){
      }
      @Override public void onChildMoved(      DataSnapshot dataSnapshot,      String s){
      }
      @Override public void onCancelled(      DatabaseError databaseError){
      }
    }
;
    db.getReference().child("String_Node_Str").child(auth.getCurrentUser().getUid()).child("String_Node_Str").addChildEventListener(childEventListener);
  }
  bind.postList.setLayoutManager(new LinearLayoutManager(getContext()));
  bind.postList.setAdapter(adapter);
  bind.addPost.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      if (user == null)       return;
      AlertDialog.Builder builder=new AlertDialog.Builder(ProfileFragment.this.getContext());
      View view=getLayoutInflater().inflate(R.layout.dialog_add_post,null);
      final EditText content=(EditText)view.findViewById(R.id.content);
      final TextView post=(TextView)view.findViewById(R.id.post);
      builder.setView(view);
      final AlertDialog d=builder.create();
      d.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
      d.show();
      post.setOnClickListener(new View.OnClickListener(){
        @Override public void onClick(        View v){
          d.cancel();
          createPost(content.getText().toString());
        }
      }
);
    }
  }
);
  dialog=new ProgressDialog(getContext());
  dialog.setMessage(getResources().getString(R.string.loading));
  dialog.setCancelable(false);
  runningDialog=true;
  dialog.show();
  db.getReference().child("String_Node_Str").child(auth.getCurrentUser().getUid()).addListenerForSingleValueEvent(new ValueEventListener(){
    @Override public void onDataChange(    DataSnapshot dataSnapshot){
      user=dataSnapshot.getValue(User.class);
      if (user == null) {
        auth.signOut();
        getActivity().finish();
        startActivity(new Intent(getContext(),SigninActivity.class));
        return;
      }
      user.setUid(auth.getCurrentUser().getUid());
      bind.userEmail.setText(user.getEmail());
      bind.userName.setText(user.getName());
      if (user.getPhoto_url() != null)       Picasso.with(getActivity()).load(user.getPhoto_url()).resize(ImageUtils.SIZE_XXL,ImageUtils.SIZE_XXL).into(bind.photo);
      dialog.cancel();
      runningDialog=false;
      Toast.makeText(getContext(),getResources().getString(R.string.welcome),Toast.LENGTH_SHORT).show();
    }
    @Override public void onCancelled(    DatabaseError databaseError){
      dialog.cancel();
      Toast.makeText(getContext(),getResources().getString(R.string.error),Toast.LENGTH_SHORT).show();
    }
  }
);
  String userEmail="String_Node_Str";
  if (auth.getCurrentUser().getEmail() != null)   userEmail=auth.getCurrentUser().getEmail();
 else   userEmail=auth.getCurrentUser().getPhoneNumber();
  bind.userEmail.setText(userEmail);
  bind.logout.setOnClickListener(new View.OnClickListener(){
    @Override public void onClick(    View v){
      auth.signOut();
      startActivity(new Intent(getContext(),SigninActivity.class));
      getActivity().finish();
    }
  }
);
  return bind.getRoot();
}