Update app.py

app.py

@@ -223,7 +223,7 @@ async def extract_text_from_file(file: UploadFile):
 
         # Check file type
         if not file.filename.lower().endswith((".pdf", ".docx", ".txt")):
-            logger.error(f"Unsupported file format: {file.filename}")
+            logger.error(f"Unsupported files format: {file.filename}")
             raise ValueError("Unsupported file format. Please upload a PDF, DOCX, or TXT file.")
 
         if file.filename.endswith(".pdf"):