diff --git a/services/cloudbrain/cloudbrainTask/sync_status.go b/services/cloudbrain/cloudbrainTask/sync_status.go
index 29d99c7901..d6b41eab50 100644
--- a/services/cloudbrain/cloudbrainTask/sync_status.go
+++ b/services/cloudbrain/cloudbrainTask/sync_status.go
@@ -98,8 +98,10 @@ func SyncGrampusNotebookStatus(job *models.Cloudbrain) (*models.Cloudbrain, erro
 			notification.NotifyChangeCloudbrainStatus(job, oldStatus)
 		}
 		if job.ComputeResource == models.NPUResource {
-			job.TrainUrl = result.JobInfo.Tasks[0].CodeUrl
-			job.DataUrl = result.JobInfo.Tasks[0].DataUrl
+			if len(result.JobInfo.Tasks) > 0 {
+				job.TrainUrl = result.JobInfo.Tasks[0].CodeUrl
+				job.DataUrl = result.JobInfo.Tasks[0].DataUrl
+			}
 		}
 		err = models.UpdateJob(job)
 		if err != nil {