force creation – "Submit process overlapped" error

Hi,

I slightly modified and added a bug in knews/includes/automated_jobs.php.
Then I tried to force the automatic creation of some newsletters, which failed obviously.

I restored the initial “automated_jobs.php”, but ever since, when I try to force the automatic creation again, nothing happens and “* Submit process overlapped, terminating this one… ” is printed.

I tried de-activating the knews, but I still have the same issue.

Is there a way I could force terminate the creation job that failed?

Cheers

https://wordpress.org/plugins/knews/