diff --git a/workflow-engine-core/src/main/resources/sql/upgrade_to_1.4.2.sql b/workflow-engine-core/src/main/resources/sql/upgrade_to_1.4.2.sql
index 773b7040c..78de441ee 100644
--- a/workflow-engine-core/src/main/resources/sql/upgrade_to_1.4.2.sql
+++ b/workflow-engine-core/src/main/resources/sql/upgrade_to_1.4.2.sql
@@ -28,6 +28,6 @@ create table `workflow-engine`.ext_ax_process_log
 ) comment '审批日志持久化';
 
 create unique index idx_process_task_status
-    on ext_ax_process_log (process_instance_id, task_id, status, is_delete);
+    on ext_ax_process_log (process_instance_id asc, task_id asc, status asc, create_at desc);
 
 
diff --git a/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/web/bpmn/BpmnProcessInstanceController.java b/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/web/bpmn/BpmnProcessInstanceController.java
index ade90a7d7..f00528e8b 100644
--- a/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/web/bpmn/BpmnProcessInstanceController.java
+++ b/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/web/bpmn/BpmnProcessInstanceController.java
@@ -345,7 +345,7 @@ public class BpmnProcessInstanceController extends BasicPopulateAvatarController
     public CommonResponse<BpmnProcessInstanceLogVO> getProcessInstanceLogs(@Validated @RequestBody BpmnProcessInstanceLogQueryDTO dto) {
         log.info("获取指定流程实例的日志 getProcessInstanceLog===>>>参数：{}", JSONUtil.toJsonStr(dto));
         BpmnProcessInstanceLogVO log = bpmnProcessInstanceService.getProcessInstanceLog(dto);
-        parseSignatureUrl(log);
+//        parseSignatureUrl(log);
         return success(log);
     }