After latest update of Xcode (10.2), Web Inspector is not working

Managed to resolve it updating the OS to 10.14.4 and correspondingly the Safari to 12.1.


Nothing worked for me... but then I found Safari Technology Preview https://developer.apple.com/safari/technology-preview/ - installing this latest version of safari did the trick for me.


After updating to iOS 13 and Safari 13, the connected iPhone did not show up in Safari either. The solution was also for me, to clear the trusted computers on the iPhone under the developer settings and reconnect the iPhone: clear the trusted computers on the iPhone