It would appear at some point in the last wee while , WiFi has stopped working. I can connect via Ethernet , however that Ethernet connects via the Mesh WiFi hub . So as you can see it’s not the WiFi in the house but the WiFi module/software in the Mac . Anyone had this ? Googling it doesn’t seem that uncommon with the latest OS update. Tried one of the fixes deleting files etc but still the same. May try again when less tired.