How to fix crontab: can’t open your crontab file

It looks like that the crontab file is empty. Add the job to the crontab file and try again.

How to add job to crontab file:
1. Add the jobs list in any txt file.
2. Use that txt file to add in crontab file as below and try again with your crontab -l command.

$crontab txtfile

If Dharini’s fix not work, then just add an extra empty line at the end of the cron file.