From 67003ed469a5157c3d0a53f8419d5016c9089b50 Mon Sep 17 00:00:00 2001
From: Jose Diaz-Gonzalez <email@josediazgonzalez.com>
Date: Tue, 10 Jun 2025 23:39:35 -0400
Subject: [PATCH] fix: skip cron entries that are missing a command or a
 schedule

---
 plugins/cron/cron.go | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/plugins/cron/cron.go b/plugins/cron/cron.go
index dd30c25e8..667f5ecf7 100644
--- a/plugins/cron/cron.go
+++ b/plugins/cron/cron.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 
 	appjson "github.com/dokku/dokku/plugins/app-json"
+	"github.com/dokku/dokku/plugins/common"
 
 	"github.com/multiformats/go-base36"
 	cronparser "github.com/robfig/cron/v3"
@@ -75,7 +76,17 @@ func FetchCronEntries(appName string) ([]TemplateCommand, error) {
 		return commands, nil
 	}
 
-	for _, c := range appJSON.Cron {
+	for i, c := range appJSON.Cron {
+		if c.Command == "" {
+			common.LogWarn(fmt.Sprintf("Missing cron command for app %s (index %d)", appName, i))
+			continue
+		}
+
+		if c.Schedule == "" {
+			common.LogWarn(fmt.Sprintf("Missing cron schedule for app %s (index %d)", appName, i))
+			continue
+		}
+
 		parser := cronparser.NewParser(cronparser.Minute | cronparser.Hour | cronparser.Dom | cronparser.Month | cronparser.Dow | cronparser.Descriptor)
 		_, err := parser.Parse(c.Schedule)
 		if err != nil {