one or more objects failed to apply, reason: error when patching "/dev/shm/1490806802": CronJob.batch "consumer" is invalid: spec.schedule: Required value (retried 5 times)

[mathieux51]

Checklist:

• I've searched in the docs and FAQ for my answer: https://bit.ly/argocd-faq.
• I've included steps to reproduce the bug.
• I've pasted the output of argocd version.

Describe the bug

I can't remove a cronjob. Removing the cronjob in the code will trigger the following error:

one or more objects failed to apply, reason: error when patching "/dev/shm/1490806802": CronJob.batch "consumer" is invalid: spec.schedule: Required value (retried 5 times)

If I leave the cronjob I get a failed sync and if I remove the cronjob I'm out of sync.
At first I thought it was related to #9226 or #10759 but as the hard refresh + restart of the application didn't do anything I'm not sure it's related anymore.

To Reproduce

Create a cronjob with this application chart:

application:
  cronJob:
    enabled: true
    jobs:
      consumer:
        schedule: "0 0 1 1 *"

Expected behavior

I'd expect the cronjob to be deleted.

Screenshots

Version

{
    "Version": "v2.12.1+26b2039",
    "BuildDate": "2024-08-16T16:42:13Z",
    "GitCommit": "26b2039a55b9bdf807a70d344af8ade5171d3d39",
    "GitTreeState": "clean",
    "GoVersion": "go1.22.4",
    "Compiler": "gc",
    "Platform": "linux/amd64",
    "KustomizeVersion": "v5.4.2 2024-05-22T15:19:38Z",
    "HelmVersion": "v3.15.2+g1a500d5",
    "KubectlVersion": "v0.29.6",
    "JsonnetVersion": "v0.20.0"
}

Logs

Didn't anything special in the logs

[mathieux51]

I struggled for a week on this and then 5 minutes after I create this Github issue, I managed to fix it 🙈. If you experience something similar this is what worked for me:

• edited the YAML of my application kind: Application (apiVersion: argoproj.io/v1alpha1)
• removed the references to the cronjob
• synced the ArgoCD appliation