Comment 33 for bug 1961088

@Alex Kavanagh

It is glad to receive you reply, I have learned abort juju, but I think it not the problem, I do not use it at all. For now, my LB can work successfully, but the operating status is offline, and the health manager log show 'Exception: 'NoneType' object has no attribute 'encode', then I add 'heartbeat_key = 20e8350e-950f-40fb-bb36-b9259e355523' in octavia.conf ,it shows 'calculated hmac: c5c8c5c7767853dd9e579e2e5b6b75cf32e4f4e84957e3d47548dcd289130b9b not equal to msg hmac',and then i do not have a solution to solve it.