F5 APM Failed to download configuration

Hi . My VPN clinet showing Disconnected with failed to download configuration error . Existing setup is :

F5 AWAF VE version 14.1.2.3 in front of APM . I have created LTM Virtual Server with pool member pointing to F5 APM Virtual Server . AWAF is in transparent mode currently . I tried to remove AWAF policy also but no luck .

F5 APM is running version 14.0.1 .

If i access directly from APM it is working fine . When try to access from ASM it is not working fine .

Error       HOST        CHostCtrl::OnTimer(), TUNNEL_SERVER_READY_CHECK - configuration read timed out

Error       HOST        \HostCtrl.h, CHostCtrl::Failed, Failed to download configuration (error: 0)

Error       HOST        \HostCtrl.h, CHostCtrl::Failed, Firing OnError event (message: Failed to download configuration)

Is this issue related to ciphers ?

Thanks