After I have updated my system to ISPConfig 3.1.14p2, the ISPConfig control panel Monit frame becomes blank. If I run the Monit frame in a new tab, it do display correctly. It happens to Firefox, Opera and Google Chrome. Under Google Chrome, it displays this message: Requests to the server have been blocked by an extension. However, Monit was still working inside Firefox just before the ISPConfig update. How do I correct it? My OS is Ubuntu 18.04.3.