In reference to HPCC-20215:
When building latest master, with no security or session, from a clean install. ECLWatch does not load.
Console: unexpected identifier

When sendAuthRequest() runs, responseType is defaulting to none, and going to the else statement, skipping the switch case. causing an alert to be shown when running in VSCode.

When opening in browser (Chrome and Firefox) with ip, the eclwatch page tries to load, but goes blank.

The moving of 

 
xhttp.open('GET', '/esp/getauthtype', true);

xhttp.send();
causes ECLWatch not to load.