Ocserv hang up after connecting the second user on option ( max-same-clients = 1 )

[info at itnserver.com]

Hello

When I edit the configuration file in

max-same-clients = 1

The first User successfully connected ( windows 8 , anyconnect , 
username : test )
Then
Test 1 . username test connected on another computer ( windows 7 , 
anyconnect , username :test )
Error password
Option max-same-clients = 1 successfully works
Test 2 . username test connected on another computer ( linux , 
anyconnect , username  : test )
Error password
Option max-same-clients = 1 successfully works

But
Test 3 . The User on  mobile ( Android  , anyconnect , username : test )
Then Error And Ocserv hang up

Segmentation fault
[root at admin ~]# ocserv[8483]: 137.254.252.227:10936 worker-misc.c:90: 
parent terminated
ocserv[8537]: common.c:301: recvmsg returned zero
ocserv[8437]: 146.41.242.168:50883 worker-misc.c:90: parent terminated
ocserv[8537]: 189.165.115.121:39745 worker-auth.c:227: error receiving 
auth reply message
ocserv[8452]: 137.255.88.231:3143 worker-misc.c:90: parent terminated
ocserv[8537]: 189.165.115.121:39745 worker-auth.c:836: failed 
authentication for ''


Thanks
       Alex