Unable to invoke rake task from cron

Hello,    Unable to invoke the custom rake task through cron under bundler. Same task invoke without bundler. Anyone please suggest solution?

Here is the cron:

*/1 * * * * cd /home/rails_app && /usr/bin/bundle exec rake say_hi >> /home/crontab_errors.txt

What did you observe? Perhaps add a 2>&1 to the end to get both stdout and stderr instead of out just stdout into crontab_errors.txt file.

If you are using rvm you may need to call set it up first. Here is what we do in some of our crontabs with a system wide install of rvm

30 10 * * * . /opt/rvm/scripts/rvm && (cd ...; bundle exec "some_task")