Set get_config as the name of the function

backend/open_webui/routers/images.py

@@ -34,7 +34,7 @@ router = APIRouter()
 
 
 @router.get("/config")
-async def get_def(request: Request, user=Depends(get_admin_user)):
+async def get_config(request: Request, user=Depends(get_admin_user)):
     return {
         "enabled": request.app.state.config.ENABLE_IMAGE_GENERATION,
         "engine": request.app.state.config.IMAGE_GENERATION_ENGINE,