vtkPolyDataReader: Premature EOF

Greetings,
I’m trying to implement Implicit modeling from lines spelling the word
“hello.” and my code:
vtkNew reader;
reader->SetFileName(“C:/Users/ASUS/Desktop/Hello/hello.vtk”);
however when running it gives me an error like this:
vtkPolyDataReader (0125EDF8): Premature EOF reading first line! for file: C:/Users/ASUS/Desktop/Hello/hello.vtk

Any suggestion for what can be done?
Thanks