can't add arbiter

[pocket5s]

Trying to add an arbiter to a cluster and when I do I get this response:

{
“ok” : 0,
“errmsg” : “PerconaFT: internal error code 28: unknown ft error”,
“code” : 1
}

[luis.contreras]

Hi Pocket5s,

Could post your config file ? and log files ?