diff --git a/renren-admin/src/main/java/io/renren/modules/activiti/service/ActTaskService.java b/renren-admin/src/main/java/io/renren/modules/activiti/service/ActTaskService.java
index e2a759ff..c3dcdbd8 100644
--- a/renren-admin/src/main/java/io/renren/modules/activiti/service/ActTaskService.java
+++ b/renren-admin/src/main/java/io/renren/modules/activiti/service/ActTaskService.java
@@ -151,6 +151,7 @@ public class ActTaskService extends BaseServiceImpl {
                     .stream()
                     .map(index -> index.getMember())
                     .filter(Objects::nonNull)
+                    .filter(index -> !index.isEmpty())
                     .flatMap(index -> index.stream())
                     .map(index -> (String) index.get("id"))
                     .filter(index -> !userId.equals(index)) // 过滤非本人
diff --git a/renren-admin/src/main/resources/db/V8.3__tb_fuse_add_col.sql b/renren-admin/src/main/resources/db/V8.4__tb_fuse_add_col.sql
similarity index 100%
rename from renren-admin/src/main/resources/db/V8.3__tb_fuse_add_col.sql
rename to renren-admin/src/main/resources/db/V8.4__tb_fuse_add_col.sql