diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index c1b18fd35..7896b7a80 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.1.9",
+    "version": "2.1.10",
     "main": "package.json",
     "author": "masnn",
     "dependencies": {
diff --git a/packages/hydrojudge/src/cases.ts b/packages/hydrojudge/src/cases.ts
index 7acc30748..ce8a13ae3 100644
--- a/packages/hydrojudge/src/cases.ts
+++ b/packages/hydrojudge/src/cases.ts
@@ -193,7 +193,7 @@ async function readAutoCases(folder, { next }) {
     return config;
 }
 
-export async function readYamlCases(folder: string, cfg: Dictionary<any>, args) {
+export async function readYamlCases(folder: string, cfg: Dictionary<any> = {}, args) {
     const config: any = {
         checker_type: 'default',
         count: 0,
diff --git a/packages/hydrojudge/src/service.ts b/packages/hydrojudge/src/service.ts
index e2c06feac..e3ba0f648 100644
--- a/packages/hydrojudge/src/service.ts
+++ b/packages/hydrojudge/src/service.ts
@@ -187,6 +187,7 @@ async function postInit() {
             this.stat = {};
             this.stat.receive = new Date();
             this.request = request;
+            logger.debug('%o', request);
         }
 
         async handle() {
diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 609ad865d..e979e5fe7 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.13.28",
+    "version": "2.13.29",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
diff --git a/packages/hydrooj/src/model/task.ts b/packages/hydrooj/src/model/task.ts
index d334aa66b..85ee6045f 100644
--- a/packages/hydrooj/src/model/task.ts
+++ b/packages/hydrooj/src/model/task.ts
@@ -1,8 +1,10 @@
 import moment from 'moment-timezone';
 import { FilterQuery, ObjectID } from 'mongodb';
 import { Task } from '../interface';
+import { Logger } from '../logger';
 import * as db from '../service/db';
 
+const logger = new Logger('model/task');
 const coll = db.collection('task');
 
 export async function add(task: Partial<Task> & { type: string }) {
@@ -34,6 +36,7 @@ export async function getFirst(query: FilterQuery<Task>) {
     q.executeAfter = q.executeAfter || { $lt: new Date() };
     const res = await coll.findOneAndDelete(q);
     if (res.value) {
+        logger.debug('%o', res.value);
         if (res.value.interval) {
             await coll.insertOne({
                 ...res.value, executeAfter: moment().add(...res.value.interval).toDate(),