Uncaught ReferenceError: GetCountOfPeople is not defined at HTMLButtonElement.onclick (GetCountOfPeople:1)

I am getting

Uncaught ReferenceError: GetCountOfPeople is not defined  at HTMLButtonElement.onclick (GetCountOfPeople:1)

Not sure what am i doing wrong.

export function GetCountOfPeople (LocationGuid) {
    'use strict';
    try {
        console.log('Called GetCountOfPeople');
    } catch (e) {
        console.error("Error Occured in GetCountOfPeople  Method");
    }
}

This button is rendered like this when inspecting in developer tools, element inspector

<button class="btn btn-success mt-2" onclick="GetCountOfPeople('e28e06b4-6434-44fa-812b-d86e2c061bce')" tabindex="0">GetCountOfPeople Here</button>

This button is generated from the following code

var infowindow = new google.maps.InfoWindow();
google.maps.event.addListener(marker, 'click', (function (marker) {
                return function () {
                    InfocusMarker = marker;

                    var content = "<span style='font-weight: bold;'>" + marker.LocationName + "</span>"
                        content = content + "<br/><button class='btn btn-success mt-2' onclick=GetInLine('" + marker.LocationGuid + "')>GetInLine Here</button>"

                    }

                    infowindow.marker = marker;
                    infowindow.setContent(content);
                    infowindow.open(mapNew, marker);
                }
            })(marker, i));