actor call fail.

actor child id not found.

convert to path error.

actor function name is error.

marshal arg error.

actor target path is nil.

actor publish remote error.

source equal target.

unmarshal arg error.

discovery not fond node id.

node request error.

is ok.

rpc data marshal error.

rpc net error.

rpc remote method executor error.

rpc data unmarshal error.

session uid not bind.