feat：增加空指针判断

haoban-manage3-service/src/main/java/com/gic/haoban/manage/service/service/out/impl/MemberUnionidRelatedApiServiceImpl.java

@@ -1839,6 +1839,12 @@ public class MemberUnionidRelatedApiServiceImpl implements MemberUnionidRelatedA
         String[] s = sceneStr.split("_");
         String relationKey = s[1];
         TabHaobanExternalClerkRelated externalClerkRelated = externalClerkRelatedMapper.getByRelationKey(relationKey);
+        if (externalClerkRelated == null) {
+            log.error("关注公共号-会员回调好办关联好友,未查询到,relationKey：{}",relationKey);
+            serviceResponse.setCode(0);
+            serviceResponse.setMessage("未查询到好友关系");
+            return serviceResponse;
+        }
         externalClerkRelatedApiService.bindMemberIdExternalById(externalClerkRelated.getExternalClerkRelatedId(), enterpriseId, memberId, unionid);
         return serviceResponse;
     }