rlm_perl module crash on high load, need to restart service

Hi All, I am using the rlm_perl module with an async TCP server. in this rlm_perl module is the TCP socket client and swoole is Async TCP socket server. When i am testing high load, at that time it's showing an error duplicate packet conflict module queue and crashes the server, even after stopping the load the freerdius is not working, i need to restart the freeradius server and it's working fine. Please guide me. Thanks Imdad