Fix deployment issue with admin app (#478)

Author: lickem22

admin_app/package.json

@@ -26,6 +26,7 @@
     "papaparse": "^5.4.1",
     "react": "^18",
     "react-apexcharts": "^1.4.1",
+    "react-datepicker": "^4.22.0",
     "react-dom": "^18"
   },
   "devDependencies": {