Single record query and update not working

I have tried to a single record query by hard coding the userid name in the Querybuilder, but it just displays the form with empty record. How can I debug this. I have turned on debugging, but not sure where the debug log is goinng. I also have the following error on my browser debug console:
DevTools failed to load SourceMap: Could not load content for https://www.locatemedical.com/app/bootstrap/4/js/bootstrap.min.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE