I am using '''Firefox Developer Edition''' Version: 1'''10.0b5 (64-bit)''' on '''M1 Mac''' running '''Ventura 13.1'''. I am building an webapp some XHR triggering in background but it is '''not necessary''' to run the application (running fine on other browsers). But on '''Firefox Developer Edition''', It shows a error window with the message and stops loading the application. '''Firefox can’t establish a connection to the server at localhost:4000.''' ''localhost:4000'' is the failing XHR request domain. I have attached the screenshot. How to ignore the XHR failing errors just like other browsers?