diff --git a/back/package.json b/back/package.json
index 8c255b84..509f7cfd 100644
--- a/back/package.json
+++ b/back/package.json
@@ -75,7 +75,7 @@
     "lint-staged": "^11.0.0",
     "prettier": "^2.3.1",
     "ts-node-dev": "^1.1.8",
-    "typescript": "^3.8.3"
+    "typescript": "^4.5.4"
   },
   "lint-staged": {
     "*.ts": [
diff --git a/back/src/Services/MessageHelpers.ts b/back/src/Services/MessageHelpers.ts
index 606374be..aec71411 100644
--- a/back/src/Services/MessageHelpers.ts
+++ b/back/src/Services/MessageHelpers.ts
@@ -10,7 +10,16 @@ import {
 import { UserSocket } from "_Model/User";
 import { RoomSocket, ZoneSocket } from "../RoomManager";
 
-export function emitError(Client: UserSocket, message: string): void {
+export function emitError(Client: UserSocket, error: unknown): void {
+    let message = "";
+    if (error instanceof Error) {
+        message = error.message;
+    } else if (typeof error === "string") {
+        message = error;
+    } else {
+        message = "Unknown error";
+    }
+
     const errorMessage = new ErrorMessage();
     errorMessage.setMessage(message);
 
diff --git a/back/yarn.lock b/back/yarn.lock
index 6a2bf3c3..f02046dc 100644
--- a/back/yarn.lock
+++ b/back/yarn.lock
@@ -2900,10 +2900,10 @@ type-fest@^0.8.1:
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
   integrity sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==
 
-typescript@^3.8.3:
-  version "3.9.7"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
-  integrity sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==
+typescript@^4.5.4:
+  version "4.5.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.5.4.tgz#a17d3a0263bf5c8723b9c52f43c5084edf13c2e8"
+  integrity sha512-VgYs2A2QIRuGphtzFV7aQJduJ2gyfTljngLzjpfW9FoYZF6xuw1W0vW9ghCKLfcWrCFxK81CSGRAvS1pn4fIUg==
 
 uWebSockets.js@uNetworking/uWebSockets.js#v18.5.0:
   version "18.5.0"