diff --git a/server/skillhub-domain/src/main/java/com/iflytek/skillhub/domain/security/SecurityScanService.java b/server/skillhub-domain/src/main/java/com/iflytek/skillhub/domain/security/SecurityScanService.java
index 43aa8962..5efccbd0 100644
--- a/server/skillhub-domain/src/main/java/com/iflytek/skillhub/domain/security/SecurityScanService.java
+++ b/server/skillhub-domain/src/main/java/com/iflytek/skillhub/domain/security/SecurityScanService.java
@@ -111,7 +111,8 @@ public class SecurityScanService {
     }
 
     public boolean isTaskAlreadyProcessed(String taskId) {
-        return taskId != null && auditRepository.existsByTaskIdAndScannedAtIsNotNull(taskId);
+        return taskId != null && auditRepository != null
+                && auditRepository.existsByTaskIdAndScannedAtIsNotNull(taskId);
     }
 
     @Transactional