Update app.py

app.py

@@ -87,7 +87,9 @@ def extract_pdf_text(file_data):
     try:
         pdf_document = fitz.open(stream=file_data, filetype="pdf")
         text = "\n".join([page.get_text("text") for page in pdf_document])
-        return text
+        pdf_document.close()  # Explicitly close the PDF
+        return text if text.strip() else ""  # Handle empty PDFs gracefully
+        
     except Exception as e:
         logger.error(f"PDF Extraction Error: {e}")
         return None