From bc4582caf4aeae0497672af0a6f7f8da6b950aef Mon Sep 17 00:00:00 2001
From: hooper <hu7741927@gmail.com>
Date: Thu, 28 Oct 2021 11:16:11 +0800
Subject: [PATCH] =?UTF-8?q?=C3=A4=C2=BF=E4=BF=AE=E5=A4=8D=E5=AE=9A?=
 =?UTF-8?q?=E6=97=B6=E4=BB=BB=E5=8A=A1=E5=88=97=E8=A1=A8=E5=A6=86=C3=A5?=
 =?UTF-8?q?=C3=A7=E5=A6=86=C3=A5=C3=A6=E7=8A=B6=E6=80=81?=
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---
 catch/monitor/controller/Crontab.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/catch/monitor/controller/Crontab.php b/catch/monitor/controller/Crontab.php
index 36daa13..8c1b860 100644
--- a/catch/monitor/controller/Crontab.php
+++ b/catch/monitor/controller/Crontab.php
@@ -73,7 +73,9 @@ class Crontab extends CatchController
      */
     public function update(Request $request, $id)
     {
-        new CronExpression($request->post('cron'));
+        if($request->post('cron')){
+            new CronExpression($request->post('cron'));
+        }
 
         return CatchResponse::success($this->model->updateBy($id, $request->post()));
     }