How to fix WordPress when upgrading and you get error another update is currently in progress? This could be very simple as wait for 15 minutes and it will clear the error message automatically or you may need to look at the log file to see what’s causing the hang
You might have to change the PHP.ini file to increase the maximum execution time default is 30 seconds. You might see a message like Fatal error: Maximum execution time of 30 seconds exceeded, then change it in your PHP.ini in around line 380 30 to whatever
Your error of URL might be: /wp-admin/update-core.php?action=do-core-upgrade
WordPress update is currently in progress
Another update is currently in progress. If waiting for 15 minutes does not fix it, then you might need to go into the database and: delete the core_updater.lock option from your WordPress database
Also, make sure to clear your cache and restart the web service to get the updated setting for your PHP.ini, that should be it. If you still have error check logs and maybe plugin you used may not be supporting newer version of WordPress.