Schedule Tasks Not Running Automatically

Schedule Tasks are not running automatically. When we run from the admin portal we see no issues. I have validated the Store URL and they look good. How to restart or enable these tasks that suddenly stopped running.  I see this error in the error logs
A public action method 'runtask' was not found on controller 'Nop.Admin.Controllers.ScheduleTaskController'.

Were they running before ?
Have you made any changes to the code or added any new plugins ?

Yes, we have changes for other things that got deployed.   No new plugins are added. How can we restart the scheduled tasks

What version of nopCommrce ?
All enabled Schedule Tasks should run automatically
Did you try stop / start the webserver or reboot the server ?
Then check the error log again