diff --git a/back/src/Model/Websocket/Message.ts b/back/src/Model/Websocket/Message.ts
index 20df9801..ccf5d287 100644
--- a/back/src/Model/Websocket/Message.ts
+++ b/back/src/Model/Websocket/Message.ts
@@ -6,6 +6,7 @@ export class Message {
 
     constructor(data: any) {
         if (!data.userId || !data.roomId) {
+            console.error("Got invalid message", data);
             throw Error("userId or roomId cannot be null");
         }
         this.userId = data.userId;