Log message might be informative:
2018-08-20 14:21:15.925747 web_js 550 ERR Uncaught ReferenceError: addMonitor is not defined http://127.0.0.1/zm/index.php 93
Log message might be informative:
2018-08-20 14:21:15.925747 web_js 550 ERR Uncaught ReferenceError: addMonitor is not defined http:// 127.0.0. 1/zm/index. php 93