ACI Cisco Cisco ACI – Restart the GUI (Websocket Error) Fix the websocket error on a Cisco APIC Home / Posts / Cisco ACI – Restart the GUI (Websocket Error) I got some strange Websocket Errors on the Gui Login Page, the following fixed the problem for me 1 2 [email protected]:~> acidiag restart mgmt {u'dme': {u'output': u'mgmt start/running\n', u'error_code': 0, u'error_string': u''}}