error: CNC-ASV-0001

[linbai]

some reports run right. but when i use email to send them ,error: CNC-ASV-0001
view report studio run history :
CNC-ASV-0001 Agent Service general error: [com.cognos.jsmcommon.soap.client.SDKClientException] CNC-MON-0011 The Monitor Service encountered an error. DPR-ERR-2056 The Report Server is not responding. Handler trace back: [the_dispatcher] com.cognos.pogo.handlers.performance.PerformanceIndicationHandler [the_dispatcher] com.cognos.pogo.handlers.logic.ChainHandler [service_lookup] com.cognos.pogo.handlers.engine.ServiceLookupHandler [load_balancer] com.cognos.pogo.handlers.logic.ChainHandler [lb_forwarder] com.cognos.p2plb.clerver.LoadBalanceHandler [batchreportservicechain] com.cognos.pogo.handlers.logic.ChainHandler [warptask_with_authenticate] com.cognos.pogo.handlers.logic.ChainHandler [do_batch_warp] com.cognos.pogo.handlers.logic.ChainHandler [warptaskmtaChain] com.cognos.pogo.handlers.logic.ChainHandler [warptaskmta] com.cognos.pogo.reportservice.BatchReportServerHandler. CNC-MON-0011 The Monitor Service encountered an error. DPR-ERR-2056 The Report Server is not responding. Handler trace back: [the_dispatcher] com.cognos.pogo.handlers.performance.PerformanceIndicationHandler [the_dispatcher] com.cognos.pogo.handlers.logic.ChainHandler [service_lookup] com.cognos.pogo.handlers.engine.ServiceLookupHandler [load_balancer] com.cognos.pogo.handlers.logic.ChainHandler [lb_forwarder] com.cognos.p2plb.clerver.LoadBalanceHandler [batchreportservicechain] com.cognos.pogo.handlers.logic.ChainHandler [warptask_with_authenticate] com.cognos.pogo.handlers.logic.ChainHandler [do_batch_warp] com.cognos.pogo.handlers.logic.ChainHandler [warptaskmtaChain] com.cognos.pogo.handlers.logic.ChainHandler [warptaskmta] com.cognos.pogo.reportservice.BatchReportServerHandler


how to solve it ?