Unable to access data in collection for chart.js

Question

I am trying to access data from the collection to display in a chart using chart.js and MEAN stack. I am retrieving the collection of data stored in the database but when i try displaying a specific data variable it does not show anything. This is the collection of data being logged:

and this is the component typescript code associated:

ngOnInit(): void {
    this.chartService.noOfEqu().subscribe(res=>{
      console.log(res);
      let areaCode = res['list'].map(res=>res.areaCode)
      let inoperEqu = res['list'].map(res=>res.inoperEqu)
      let operEqu = res['list'].map(res=>res.operEqu)
      let date = res['list'].map(res=>res.eventDate)
      
      let Dates = []
      date.forEach((res) => {
        let jsdate = new Date(res *1000)
        Dates.push(jsdate.toLocaleTimeString('en', {year: 'numeric', month: 'short', day:'numeric' }))
        
      });
console.log(Dates)
console.log(areaCode)
          })
      }
    }

However the Dates and Area Code does not display in the console.