No response from editor but dashboard UI stills works ?! (FIXED)

OK chasing down the chrome error message helped . . .

see Chrome CORS error on request to localhost dev server from remote site - Stack Overflow

changing my chrome setting for :
chrome://flags/#block-insecure-private-network-requests

made the editor reappear ( no idea why it suddenly affected me from this morning ), however, I now get the 'lost connection to server' problem :frowning: