Can't rebalance any server, nor add, remove, failover.

Hello,

We can't add or remove any server. Also we can't failover them.

All the time we got this error:

Server error during processing: ["web request failed",

{path,"/controller/rebalance"}

,

{type,exit}

,
{what,
{noproc,
{gen_fsm,sync_send_event,
[

{global,ns_orchestrator}

,

{start_rebalance, ['ns_1@10.176.40.107', 'ns_1@10.176.42.190','ns_1@10.179.5.6', 'ns_1@10.179.91.14', 'ns_1@10.180.235.71', 'ns_1@10.182.96.255', 'ns_1@10.182.97.253', 'ns_1@10.182.99.53', 'ns_1@10.182.99.220'], [], ['ns_1@10.182.96.246']}

]}}},
{trace,
[

{gen_fsm,sync_send_event,2}

,

{menelaus_web,do_handle_rebalance,3}

,

{menelaus_web,loop,3}

,

{mochiweb_http,headers,5}

,

{proc_lib,init_p_do_apply,3}

]}]

It is very (or the same) that this ticket: MB-4214, but we are on 1.8.1.