GoogleMaps API console error: TypeError: a is null?

Question

Google Maps

When creating a map through the Google API, an error appears in the console: TypeError: a is null. HTML code:

<div id="map"></div>

<script type="text/javascript">
  var map;
  function initMap() {
    map = new google.maps.Map(document.getElementById('map}'), {
    center: {lat: -34.397, lng: 150.644},
    zoom: 8
    });
  }
</script>
<script async defer src="http://maps.googleapis.com/maps/api/js?key=(тут вставляю свой ключ)&callback=initMap">
</script>

And this is a standard design from Google. The error is found in the Google file itself. That same Google line:

Nf=function(){this.f=_.Kf("apiboot2",{startTime:_.Mf});_.Jf(this.f,"main");this.b=!1};Xf=function(){var a=Wf;a.b||(a.b=!0,_.Jf(a.f,"firstmap"))};_.Yf=function(a,b,c){if(a=a.fromLatLngToPoint(b))c=Math.pow(2,c),a.x*=c,a.y*=c;return a};_.$f=function(a){for(var b;b=a.firstChild;)_.Zf(b),a.removeChild(b)};_.Zf=function(a){a=new Gf(a);try{for(;;)_.z.clearInstanceListeners(a.next())}catch(b){if(b!==_.ag)throw b;}};

What could be the problem? Thank you.