downgrade mongoose

package-lock.json

@@ -16621,9 +16621,9 @@
       }
     },
     "mongoose": {
-      "version": "5.4.20",
-      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-5.4.20.tgz",
-      "integrity": "sha512-CyybxMQbCaq6jvbroamS5mPfFbxTOLLpdpkQrk1cj7Az1TX+mBbcCVhz+7XElfTMIOb58ah9O+EXmZJsLPD3Lg==",
+      "version": "5.4.19",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-5.4.19.tgz",
+      "integrity": "sha512-paRU3nbCrPIUVw1GAlxo11uIIqrYORctUx1kcLj7i2NhkxPQuy5OK2/FYj8+tglsaixycmONSyop2HQp1IUQSA==",
       "requires": {
         "async": "2.6.1",
         "bson": "~1.1.0",

package.json

@@ -64,7 +64,7 @@
     "method-override": "^3.0.0",
     "moment": "^2.22.1",
     "moment-recur": "^1.0.7",
-    "mongoose": "^5.4.20",
+    "mongoose": "^5.4.19",
     "morgan": "^1.7.0",
     "nconf": "^0.10.0",
     "node-gcm": "^1.0.2",