[js] When sending  to endpoint, make sure it is a string not an array
@@ -2202,7 +2202,7 @@ class WebElement {
}).then(function(keys) {
return element.schedule_(
new command.Command(command.Name.SEND_KEYS_TO_ELEMENT).
- setParameter('text', keys.split('')).
+ setParameter('text', keys).
setParameter('value', keys.split('')),
'WebElement.sendKeys()');
});
