refactor: replace print statements with logging for better error tracking

backend/open_webui/routers/utils.py

@@ -1,4 +1,5 @@
 import black
+import logging
 import markdown
 
 from open_webui.models.chats import ChatTitleMessagesForm
@@ -13,11 +14,14 @@ from open_webui.utils.misc import get_gravatar_url
 from open_webui.utils.pdf_generator import PDFGenerator
 from open_webui.utils.auth import get_admin_user, get_verified_user
 from open_webui.utils.code_interpreter import execute_code_jupyter
+from open_webui.env import SRC_LOG_LEVELS
 
 
+log = logging.getLogger(__name__)
+log.setLevel(SRC_LOG_LEVELS["MAIN"])
+
 router = APIRouter()
 
-
 @router.get("/gravatar")
 async def get_gravatar(email: str, user=Depends(get_verified_user)):
     return get_gravatar_url(email)
@@ -96,7 +100,7 @@ async def download_chat_as_pdf(
             headers={"Content-Disposition": "attachment;filename=chat.pdf"},
         )
     except Exception as e:
-        print(e)
+        log.exception(f"Error generating PDF: {e}")
         raise HTTPException(status_code=400, detail=str(e))