failed to receive Accounting Response

["Николай Г. Петров"]

OK, I comment all unix section in site-enable/default, but result is the 
same!

In pucture below I thurned on debug on cisco about accounting, therefore 
cisco work correctly, but radius server not recieve Accounting-Request? Why?

001534: Mar  6 22:38:57: tty2 AAA/AUTHOR/EXEC (3942780195): Port='tty2' 
list='' service=EXEC
001535: Mar  6 22:38:57: AAA/AUTHOR/EXEC: tty2 (3942780195) user='userA'
001536: Mar  6 22:38:57: tty2 AAA/AUTHOR/EXEC (3942780195): send AV 
service=shell
001537: Mar  6 22:38:57: tty2 AAA/AUTHOR/EXEC (3942780195): send AV cmd*
001538: Mar  6 22:38:57: tty2 AAA/AUTHOR/EXEC (3942780195): found list 
"default"
001539: Mar  6 22:38:57: tty2 AAA/AUTHOR/EXEC (3942780195): 
Method=radius (radius)
001540: Mar  6 22:38:57: AAA/AUTHOR (3942780195): Post authorization 
status = PASS_ADD
001541: Mar  6 22:38:57: AAA/AUTHOR/EXEC: Processing AV service=shell
001542: Mar  6 22:38:57: AAA/AUTHOR/EXEC: Processing AV cmd*
001543: Mar  6 22:38:57: AAA/AUTHOR/EXEC: Processing AV priv-lvl=1
001544: Mar  7 01:39:17 MSK: %RADIUS-3-NOACCOUNTINGRESPONSE: Accounting 
message Start for session 000000FB failed to receive Accounting Response.
001545: Mar  6 22:39:34: AAA/ACCT/CMD: User userA, Port tty2, Priv 1:
         "ping 192.168.101.147 <cr>"
001546: Mar  6 22:39:34: AAA/ACCT/CMD: Found list "default"
001547: Mar  6 22:39:34: AAA/ACCT: user userA, acct type 3 (2924816630): 
Method=radius (radius)