Join cluser error with ip subnet

When Join cluster I get error DEBUG [post] http+unix://%2Fvar%2Fsnap%2Fopenstack%2Fcommon%2Fstate%2Fcontrol.socket/core/control, args={‘data’: ‘{“join_token”: service.py:148 “TOKEN”, “address”: “54.38.94.0/24:7000”, “name”: “54.38.94.60”}’, ‘json’: None}
DEBUG http://localhost:None “POST /core/control HTTP/1.1” 400 168 connectionpool.py:474 DEBUG Response(<Response [400]>) = {“type”:“error”,“status”:“”,“status_code”:0,“operation”:“”,“error_code”:400,“error”:“ParseAddr("54.38.94.0/24"): unexpected character (at "/24")”,“metadata”:null} service.py:159