I'm trying to select an option from the dropdown. Name of my is "search" and I select a value "new". I get a below error: UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): Failed to execute 'iterateNext' on 'XPathResult': The document has mutated since the result was returned. One thing to be noted here is when I select the first dropdown there are other dropdown gets populated (ajax). I googled and couldn't figure out what's going wrong here?