I would remove the /bin/sh from the command portion of the record. Alternatively you could put quotes around /bin/sh /root/operations.sh. The operations.sh script should already have the shell name in the first line so you should not need to specify the shell name when you run the script.
Also, the cron job will start the script using the default shell of the user account under which it runs. This means that there are already two mechanisms in place to specify the shell that will run the script so you do not need to precede the name of the script with the name of the shell.
Unfortunately you will have to wait until 10:00 p.m. to see if any changes are effective.