Console errors and exceptions related to JavaScript Maps API

[andreicozma1]

Description

• The console output displays javascript errors (see picture below)

Steps to reproduce the issue:

1. Open www.volhacks.org
2. Open up Inspect Element window => Console Tab
3. First error pops up immediately, the 2nd error pops up after ~ 5 seconds

Logs:

js?key=AIzaSyCRngKslUGJTlibkQ3FkfTxj3Xss1UlZDA:149 Uncaught lf {message: "Map: Expected mapDiv of type Element but was passed null.", name: "InvalidValueError", stack: "Error\n    at new lf (https://maps.googleapis.com/m…init (https://volhacks.org/js/grayscale.js:71:11)"}
$i @ js?key=AIzaSyCRngKslUGJTlibkQ3FkfTxj3Xss1UlZDA:149
init @ grayscale.js:71
load (async)
_.I.addDomListener @ js?key=AIzaSyCRngKslUGJTlibkQ3FkfTxj3Xss1UlZDA:229
(anonymous) @ grayscale.js:40
js?key=AIzaSyCRngKslUGJTlibkQ3FkfTxj3Xss1UlZDA:73 Google Maps JavaScript API error: InvalidKeyMapError
https://developers.google.com/maps/documentation/javascript/error-messages#invalid-key-map-error