I recently upgraded HTCondor from v8.6.10 to v9.10.0. Since upgrading, I haveÂencounteredÂthis error:
```
$ sudo systemctl restart condor
$ condor_q
SECMAN:2007:Failed to end classad message
```
I found this answer from 14 years ago:Â
After deleting `CONDO_LOCAL_DIR/spool/job_queue.log`, I was able to get `condor_q` working again. I never had this problem with v8.6.10 but I have encountered it several times with v9.10.0.
I'd like to understand what is causing this problem and if there's a betterÂsolution now than removing the `job_queue.log` file.
Thanks,
Curtis