updgrade dependencies. Upgrade to nuxt@~2.13 made problems, so stay at ~2.12 for now. vulnerable serialize-javascript@<3.1.0 is now only present as a dependency of vue-server-renderer, which is being worked on: vuejs/vue#11434

Author: SillyFreak

package.json

@@ -20,7 +20,7 @@
     "express": "^4.16.4",
     "fs": "^0.0.1-security",
     "httperrors": "^2.3.0",
-    "nuxt": "^2.0.0",
+    "nuxt": "~2.12.0",
     "path": "^0.12.7",
     "pg-hstore": "^2.3.3",
     "sequelize": "^5.21.6",