Add status 404 to getMonitorById error at DB level

Server/db/mongo/modules/monitorModule.js

@@ -288,7 +288,9 @@ const getMonitorById = async (monitorId) => {
 	try {
 		const monitor = await Monitor.findById(monitorId);
 		if (monitor === null || monitor === undefined) {
-			throw new Error(errorMessages.DB_FIND_MONITOR_BY_ID(monitorId));
+			const error = new Error(errorMessages.DB_FIND_MONITOR_BY_ID(monitorId));
+			error.status = 404;
+			throw error;
 		}
 		// Get notifications
 		const notifications = await Notification.find({