Update app.py

app.py

@@ -94,11 +94,12 @@ app_description = "Convert text from a PDF file to audio. Upload a PDF file. We
 examples = [["sample.pdf"]]  # Provide example file names if needed
 
 # Create the Gradio app
+input_component = gr.File(file_types=["pdf"])
 output_component = gr.outputs.Audio()
 
 demo = gr.Interface(
     fn=generate_audio,
-    inputs="pdf"
+    inputs=input_component,
     outputs=output_component,
     title=app_name,
     description=app_description,