🚸 add fancy error

Signed-off-by: peter szemraj <[email protected]>

app.py

@@ -82,10 +82,11 @@ def convert_PDF(
 
         html_error = f"""
         <div style="color: red; font-size: 20px; font-weight: bold;">
-        File {file_path} is not a PDF file
+        File {file_path} is not a PDF file. Please upload a PDF file.
         </div>
         """
         return "File is not a PDF file", html_error, None
+
     conversion_stats = convert_PDF_to_Text(
         file_path,
         ocr_model=ocr_model,