diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 4e63299..bb15f26 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -9,12 +9,12 @@
       "version": "0.0.0",
       "dependencies": {
         "@angular/animations": "^14.3.0",
-        "@angular/cdk": "^13.2.2",
+        "@angular/cdk": "^14.2.7",
         "@angular/common": "^14.3.0",
         "@angular/compiler": "^14.3.0",
         "@angular/core": "^14.3.0",
         "@angular/forms": "^14.3.0",
-        "@angular/material": "^13.2.2",
+        "@angular/material": "^14.2.7",
         "@angular/platform-browser": "^14.3.0",
         "@angular/platform-browser-dynamic": "^14.3.0",
         "@angular/router": "^14.3.0",
@@ -411,9 +411,9 @@
       }
     },
     "node_modules/@angular/cdk": {
-      "version": "13.2.2",
-      "resolved": "https://registry.npmjs.org/@angular/cdk/-/cdk-13.2.2.tgz",
-      "integrity": "sha512-cT5DIaz+NI9IGb3X61Wh26+L6zdRcOXT1BP37iRbK2Qa2qM8/0VNeK6hrBBIblyoHKR/WUmRlS8XYf6mmArpZw==",
+      "version": "14.2.7",
+      "resolved": "https://registry.npmjs.org/@angular/cdk/-/cdk-14.2.7.tgz",
+      "integrity": "sha512-/tEsYaUbDSnfEmKVvAMramIptmhI67O+9STjOV0i+74XR2NospeK0fkbywIANu1n3w6AHGMotvRWJrjmbCElFg==",
       "dependencies": {
         "tslib": "^2.3.0"
       },
@@ -421,8 +421,8 @@
         "parse5": "^5.0.0"
       },
       "peerDependencies": {
-        "@angular/common": "^13.0.0 || ^14.0.0-0",
-        "@angular/core": "^13.0.0 || ^14.0.0-0",
+        "@angular/common": "^14.0.0 || ^15.0.0",
+        "@angular/core": "^14.0.0 || ^15.0.0",
         "rxjs": "^6.5.3 || ^7.4.0"
       }
     },
@@ -580,19 +580,19 @@
       }
     },
     "node_modules/@angular/material": {
-      "version": "13.2.2",
-      "resolved": "https://registry.npmjs.org/@angular/material/-/material-13.2.2.tgz",
-      "integrity": "sha512-YAjPp2+/wuEOPfkAxdRVdbWHiK4P3DgMZa9qP/NizN2lTXNrftEfD09ZlPIFMZRnnExezJ2LnO7eyELpc1VSKg==",
+      "version": "14.2.7",
+      "resolved": "https://registry.npmjs.org/@angular/material/-/material-14.2.7.tgz",
+      "integrity": "sha512-WXHh8pEStpgkXZJmYOg2cI8BSHkV82ET4XTJCNPdveumaCn1UYnaNzsXD13kw5z+zmy8CufhFEzdXTrv/yt7KQ==",
       "dependencies": {
         "tslib": "^2.3.0"
       },
       "peerDependencies": {
-        "@angular/animations": "^13.0.0 || ^14.0.0-0",
-        "@angular/cdk": "13.2.2",
-        "@angular/common": "^13.0.0 || ^14.0.0-0",
-        "@angular/core": "^13.0.0 || ^14.0.0-0",
-        "@angular/forms": "^13.0.0 || ^14.0.0-0",
-        "@angular/platform-browser": "^13.0.0 || ^14.0.0-0",
+        "@angular/animations": "^14.0.0 || ^15.0.0",
+        "@angular/cdk": "14.2.7",
+        "@angular/common": "^14.0.0 || ^15.0.0",
+        "@angular/core": "^14.0.0 || ^15.0.0",
+        "@angular/forms": "^14.0.0 || ^15.0.0",
+        "@angular/platform-browser": "^14.0.0 || ^15.0.0",
         "rxjs": "^6.5.3 || ^7.4.0"
       }
     },
@@ -12989,9 +12989,9 @@
       }
     },
     "@angular/cdk": {
-      "version": "13.2.2",
-      "resolved": "https://registry.npmjs.org/@angular/cdk/-/cdk-13.2.2.tgz",
-      "integrity": "sha512-cT5DIaz+NI9IGb3X61Wh26+L6zdRcOXT1BP37iRbK2Qa2qM8/0VNeK6hrBBIblyoHKR/WUmRlS8XYf6mmArpZw==",
+      "version": "14.2.7",
+      "resolved": "https://registry.npmjs.org/@angular/cdk/-/cdk-14.2.7.tgz",
+      "integrity": "sha512-/tEsYaUbDSnfEmKVvAMramIptmhI67O+9STjOV0i+74XR2NospeK0fkbywIANu1n3w6AHGMotvRWJrjmbCElFg==",
       "requires": {
         "parse5": "^5.0.0",
         "tslib": "^2.3.0"
@@ -13095,9 +13095,9 @@
       }
     },
     "@angular/material": {
-      "version": "13.2.2",
-      "resolved": "https://registry.npmjs.org/@angular/material/-/material-13.2.2.tgz",
-      "integrity": "sha512-YAjPp2+/wuEOPfkAxdRVdbWHiK4P3DgMZa9qP/NizN2lTXNrftEfD09ZlPIFMZRnnExezJ2LnO7eyELpc1VSKg==",
+      "version": "14.2.7",
+      "resolved": "https://registry.npmjs.org/@angular/material/-/material-14.2.7.tgz",
+      "integrity": "sha512-WXHh8pEStpgkXZJmYOg2cI8BSHkV82ET4XTJCNPdveumaCn1UYnaNzsXD13kw5z+zmy8CufhFEzdXTrv/yt7KQ==",
       "requires": {
         "tslib": "^2.3.0"
       }
diff --git a/frontend/package.json b/frontend/package.json
index 8566901..e551be8 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -11,12 +11,12 @@
   "private": true,
   "dependencies": {
     "@angular/animations": "^14.3.0",
-    "@angular/cdk": "^13.2.2",
+    "@angular/cdk": "^14.2.7",
     "@angular/common": "^14.3.0",
     "@angular/compiler": "^14.3.0",
     "@angular/core": "^14.3.0",
     "@angular/forms": "^14.3.0",
-    "@angular/material": "^13.2.2",
+    "@angular/material": "^14.2.7",
     "@angular/platform-browser": "^14.3.0",
     "@angular/platform-browser-dynamic": "^14.3.0",
     "@angular/router": "^14.3.0",
diff --git a/frontend/src/app/taskgroups/taskgroup-creation/taskgroup-creation.component.ts b/frontend/src/app/taskgroups/taskgroup-creation/taskgroup-creation.component.ts
index 439a923..fe4781b 100644
--- a/frontend/src/app/taskgroups/taskgroup-creation/taskgroup-creation.component.ts
+++ b/frontend/src/app/taskgroups/taskgroup-creation/taskgroup-creation.component.ts
@@ -1,10 +1,8 @@
 import {Component, Inject, OnInit} from '@angular/core';
 import {UntypedFormControl, Validators} from "@angular/forms";
 import {MAT_DIALOG_DATA, MatDialogRef} from "@angular/material/dialog";
-import {TaskgroupEntityInfo, TaskgroupService} from "../../../api";
-import {error} from "@angular/compiler/src/util";
+import {TaskgroupService} from "../../../api";
 import {MatSnackBar} from "@angular/material/snack-bar";
-import {ActivatedRoute} from "@angular/router";
 import {TaskgroupCreationData} from "./TaskgroupCreationData";