Manual:ManageJobs.php

Details
manageJobs.php is a maintenance script to manually either delete jobs from the or put abandoned jobs back into circulation. Note that, while the script can put abandoned jobs back into circulation, it won't execute them. Use for that.

Options/Arguments
manageJobs.php accepts only two options.

Usage
Both parameters are mandatory.

First find what job types are abandoned with :

Then add abandoned jobs back into circulation with --action repush-abandoned :

Then you can run to actually execute them.