Replace current page with 404 when navigating to not-found

Client/src/Pages/Monitors/Details/index.jsx

@@ -132,7 +132,7 @@ const DetailsPage = () => {
       setMonitor(res.data.data);
     } catch (error) {
       console.error("Error fetching monitor of id: " + monitorId);
-      navigate("/not-found");
+      navigate("/not-found", { replace: true });
     }
   }, [authToken, monitorId, navigate, dateRange]);