Use wp-cli to remove core_updater.lock
record from your database
wp option delete core_updater.lock
Then run update again
wp core update
or
wp core update --force
Useful article regarding the wp-cli installation.
Notes
Use wp-cli to remove core_updater.lock
record from your database
wp option delete core_updater.lock
Then run update again
wp core update
or
wp core update --force
Useful article regarding the wp-cli installation.