In Craft 3, how to clear stuck "Deleting Stale Template Caches" I've got 12 pending tasks, and can't get rid of the first stuck one.  


CP-&gt;Utilities-&gt;Clear Caches doesn't seem to help.  
In the database, in craft_queue there were five rows, the first one seeming to be the stuck one. I deleted all of those


Still the first task is stuck, and by now there are 14 tasks waiting.
I see that craft_templatecachequeries has over 11,000 rows. Would those be helpful to delete?
The answer was, to delete the first row of the queue table in the correct database.
Also, it helped to increase max_execution_time in /etc/php/7.1/apache2/php.ini