TypeError: Cannot read property 'push' of undefined

[Skippytbk]

info: TypeError: Cannot read property 'push' of undefined
at decodePolygon (C:\AGStoShapefileBD\node_modules\esri2geo\esri2geo.js:78:17)
at poly (C:\AGStoShapefileBD\node_modules\esri2geo\esri2geo.js:64:11)
at toGeoJSON (C:\AGStoShapefileBD\node_modules\esri2geo\esri2geo.js:31:19)
at C:\AGStoShapefileBD\AGStoSHP.js:186:17
at _fulfilled (C:\AGStoShapefileBD\node_modules\q\q.js:854:54)
at self.promiseDispatch.done (C:\AGStoShapefileBD\node_modules\q\q.js:883:30)
at Promise.promise.promiseDispatch (C:\AGStoShapefileBD\node_modules\q\q.js:816:13)
at C:\AGStoShapefileBD\node_modules\q\q.js:624:44
at runSingle (C:\AGStoShapefileBD\node_modules\q\q.js:137:13)
at flush (C:\AGStoShapefileBD\node_modules\q\q.js:125:13)

services.txt:

http://gis.wyo.gov/arcgis/rest/services/ets/Parcels2017/MapServer/0|Parcel Boundary