undefined is teruggekeert in Flask

package.json

@@ -10,6 +10,7 @@
   "author": "",
   "license": "ISC",
   "devDependencies": {
+    "concurrently": "^8.2.2",
     "electron": "^23.3.13",
     "npm-run-all": "^4.1.5",
     "wait-on": "^7.2.0"
@@ -17,6 +18,7 @@
   "dependencies": {
     "axios": "^1.6.7",
     "body-parser": "^1.20.2",
+    "elctron": "^0.0.1-security",
     "express": "^4.18.3",
     "mysql2": "^3.9.1",
     "python-shell": "^5.0.0"