From 15bb3559d3c2a61c17d249edcca73dc1ed14e179 Mon Sep 17 00:00:00 2001
From: Justin Shin <jshin47@gmail.com>
Date: Wed, 11 Feb 2026 13:14:21 -0500
Subject: [PATCH] Add defensive check to `GetRecurringJobIds` to prevent null
 reference exception.

---
 .../Services/HangfireWorkflowScheduler.cs                     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/modules/scheduling/Elsa.Scheduling.Hangfire/Services/HangfireWorkflowScheduler.cs b/src/modules/scheduling/Elsa.Scheduling.Hangfire/Services/HangfireWorkflowScheduler.cs
index 3b389e68..bff4c4e9 100644
--- a/src/modules/scheduling/Elsa.Scheduling.Hangfire/Services/HangfireWorkflowScheduler.cs
+++ b/src/modules/scheduling/Elsa.Scheduling.Hangfire/Services/HangfireWorkflowScheduler.cs
@@ -97,7 +97,9 @@ private IEnumerable<string> GetQueuedJobIds(string taskName)
     private IEnumerable<string> GetRecurringJobIds<TJob>(string taskName)
     {
         using var connection = jobStorage.GetConnection();
-        var jobs = connection.GetRecurringJobs().Where(x => x.Job.Type == typeof(TJob) && (string)x.Job.Args[0] == taskName);
+        var jobs = connection.GetRecurringJobs()
+            .Where(x => x.Job is { Args.Count: > 0 } && x.Job.Type == typeof(TJob) && (string)x.Job.Args[0] == taskName);
+        
         return jobs.Select(x => x.Id).Distinct().ToList();
     }
 }
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