EOne Adapter Issue

Did any of you guys see below error before? When we restarted IS the server it worked but want to know reason behind this error

Cannot connect to any OneWorld Security Server.Failure in retrieving extended token from Security Kernel

com.jdedwards.system.connector.dynamic.ServerFailureException: Cannot connect to any OneWorld Security Server.Failure in retrieving extended token from Security Kernel

2007-02-09 07:39:09 CST [ISS.0028.0012C] PSFT_E1_Adapter: Startup service (PSFT_E1_Adapter.enterpriseone.admin:registerAdapter)

2007-02-09 07:39:17 CST [ART.0114.1007E] Adapter Runtime: Error Logged. See Error log for details. Error: [ART.114.13] Adapter Runtime: Error occured while Adapter Runtime was loading adapter type “ERPAdapter”.

[ART.114.9] Adapter Runtime: Error(s) while registering adapter type ERPAdapter.

2007-02-09 07:39:17 CST [ISS.0028.0013E] Startup service exited with the following error: com.wm.pkg.art.error.DetailedServiceException: [ART.114.13] Adapter Runtime: Error occured while Adapter Runtime was loading adapter type “ERPAdapter”.

[ART.114.9] Adapter Runtime: Error(s) while registering adapter type ERPAdapter.