I am trying to import config on my staging site, and I repeatedly get the following message:
Another request may be synchronizing configuration already.
I know that there are no other processes currently importing config, so there is some rogue lock.
I am using config_split module on the site, but both methods of config import report the lock. I have updated the site to Drupal 8.6.1 but the issue may have existed prior to the update.
Question: How can I remove the lock using Drush or some other method?