I just forgot to read from the file LOL

app.js

@@ -97,7 +97,7 @@ async function initialize() {
 
   const configExists = fs.existsSync("./config.json");
   if (configExists) {
-    readConfigFromFile();
+    readConfigFromFile("./config.json");
     config.rooms.forEach(room => {
       addRoomToList(room);
     });