diff --git a/nextcloud_backup/backend/src/routes/config.ts b/nextcloud_backup/backend/src/routes/config.ts
index 5922d71..bedf674 100644
--- a/nextcloud_backup/backend/src/routes/config.ts
+++ b/nextcloud_backup/backend/src/routes/config.ts
@@ -11,7 +11,7 @@ import {
 } from "../services/webdavConfigService.js";
 import { checkWebdavLogin } from "../services/webdavService.js";
 import type { BackupConfig } from "../types/services/backupConfig.js";
-import { ValidationError } from "joi";
+import type { ValidationError } from "joi";
 import type { WebdavConfig } from "../types/services/webdavConfig.js";
 
 const configRouter = express.Router();
@@ -47,9 +47,9 @@ configRouter.put("/webdav", (req, res) => {
       res.status(204);
       res.send();
     })
-    .catch((error) => {
+    .catch((error: ValidationError) => {
       res.status(400);
-      if (error instanceof ValidationError) {
+      if (error.details) {
         res.json(error.details);
       } else {
         res.json(error);
diff --git a/nextcloud_backup/backend/tsconfig.json b/nextcloud_backup/backend/tsconfig.json
index f6fcd62..d5515f0 100644
--- a/nextcloud_backup/backend/tsconfig.json
+++ b/nextcloud_backup/backend/tsconfig.json
@@ -3,12 +3,12 @@
   "compilerOptions": {
     "allowJs": true,
     "outDir": "./dist",
-    "module": "NodeNext",
-    "moduleResolution": "NodeNext",
-    "target": "es6",
+    "module": "nodenext",
+    "moduleResolution": "nodenext",
+    "target": "ES2022",
     "sourceMap": true,
     "verbatimModuleSyntax": true,
-    "strict": true,
+    "strict": true
   },
   "include": ["src/**/*"]
-}
\ No newline at end of file
+}