关于AC控制器日志报错的问题

AC控制器有一段日志 报错输出，麻烦各位大佬们看一下，是什么原因造成的呢？

*spamApTask0: Jul 30 13:56:11.821: %LWAPP-3-REPLAY_ERR: spam_lrad.c:49282 The system has received replay error on slot 1, WLAN ID 1, count 1 from AP 80:e0:1d:43:5a:20 

*spamApTask0: Jul 30 13:54:11.829: %LWAPP-3-REPLAY_ERR: spam_lrad.c:49282 The system has received replay error on slot 1, WLAN ID 1, count 1 from AP 80:e0:1d:43:5a:20 

*spamApTask0: Jul 30 13:52:11.832: %LWAPP-3-REPLAY_ERR: spam_lrad.c:49282 The system has received replay error on slot 1, WLAN ID 1, count 1 from AP 80:e0:1d:43:5a:20 

*apfMsConnTask_0: Jul 30 13:46:49.006: %SISF-3-INTERNAL: sisf_shim_utils.c:441 Internal error, Lock of ipv6_sisf_engine_semaphore failed

 *apfMsConnTask_0: Jul 30 13:46:36.812: %SISF-3-INTERNAL: sisf_shim_utils.c:441 Internal error, Lock of ipv6_sisf_engine_semaphore failed 

Previous message occurred 2 times. 

*apfMsConnTask_0: Jul 30 13:46:14.144: %SISF-3-INTERNAL: sisf_shim_utils.c:441 Internal error, Lock of ipv6_sisf_engine_semaphore failed 

*apfMsConnTask_0: Jul 30 13:46:14.144: %SISF-3-INTERNAL: sisf_shim_utils.c:441 Internal error, Lock of ipv6_sisf_engine_semaphore failed

 Previous message occurred 3 times. 

*apfMsConnTask_0: Jul 30 13:45:11.188: %SISF-3-INTERNAL: sisf_shim_utils.c:441 Internal error, Lock of ipv6_sisf_engine_semaphore failed 

*emWeb: Jul 30 13:44:13.225: %HREAP-3-HREAP_XML_FILE_SIZE: hreap_cfg.c:509 Hreap XML file size is: 4613 bytes.

*Dot1x_NW_MsgTask_0: Jul 30 14:10:34.794: %DOT1X-3-INVALID_REPLAY_CTR: 1x_eapkey.c:458 Invalid replay counter from client e6:9c:4b:3d:8b:fd - got 00 00 00 00 00 00 00 03, expected 00 00 00 00 00 00 00 04