Update app.py

app.py

@@ -126,7 +126,7 @@ def set_DRlink(dr_link: str):
     
     # Use PyMuPDF to render the first page of the uploaded document
     if file:        
-        image, txt = purge_chat_and_render_first(NamedString(file_Path))
+        image, txt = purge_chat_and_render_first(gr.utils.NamedString(file_Path))
     else:
         raise gr.Error("Error reading DR Link!")