Catch InvalidJobOperation when deleting/canceling job

netbox/core/models/jobs.py

@@ -9,6 +9,7 @@ from django.db import models
 from django.urls import reverse
 from django.utils import timezone
 from django.utils.translation import gettext as _
+from rq.exceptions import InvalidJobOperation
 
 from core.choices import JobStatusChoices
 from core.models import ObjectType
@@ -158,7 +159,11 @@ class Job(models.Model):
         job = queue.fetch_job(str(self.job_id))
 
         if job:
-            job.cancel()
+            try:
+                job.cancel()
+            except InvalidJobOperation:
+                # Job may raise this exception from get_status() if missing from Redis
+                pass
 
     def start(self):
         """