Tests updated dependencies

package.json

@@ -68,7 +68,7 @@
     "@stomp/ng2-stompjs": "^7.2.0",
     "angular-svg-icon": "^8.0.0",
     "angulartics2": "^8.1.0",
-    "angularx-qrcode": "^1.7.0-beta.5",
+    "angularx-qrcode": "^1.6.4",
     "bootstrap": "^4.3.1",
     "cors": "^2.8.5",
     "dexie": "^2.0.4",