From 4a34a91848403f1cc1b925ccf45ad3766b45b84e Mon Sep 17 00:00:00 2001
From: undefined <masnn0@outlook.com>
Date: Sun, 21 Mar 2021 09:19:40 +0800
Subject: [PATCH] judge: also fix for daemon

---
 packages/hydrojudge/package.json       | 2 +-
 packages/hydrojudge/src/hosts/hydro.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index e9a1f5bdd..94bdfd562 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.4.14",
+    "version": "2.4.15",
     "os": [
         "linux"
     ],
diff --git a/packages/hydrojudge/src/hosts/hydro.ts b/packages/hydrojudge/src/hosts/hydro.ts
index b4b4075da..3cff1747c 100644
--- a/packages/hydrojudge/src/hosts/hydro.ts
+++ b/packages/hydrojudge/src/hosts/hydro.ts
@@ -195,7 +195,7 @@ export default class Hydro {
     async cacheOpen(domainId: string, pid: string, files: any[], next?) {
         const domainDir = path.join(getConfig('cache_dir'), this.config.host, domainId);
         const filePath = path.join(domainDir, pid); await fs.ensureDir(filePath);
-        if (!files.length) throw new SystemError('Problem data not found.');
+        if (!files?.length) throw new SystemError('Problem data not found.');
         let etags: Record<string, string> = {};
         try {
             etags = JSON.parse(fs.readFileSync(path.join(filePath, 'etags')).toString());