Why doesn't .sh run on cron?

Question

bash

Cronetab:
* * * * * /root/script.sh

script.sh:
pm2 delete all

Answer 1

Solved the error:
* * * * * /usr/local/bin/pm2 delete all

Answer 2

In the crontab, you must specify the absolute paths and programs that need to open files.

* * * * * /bin/sh /root/script.sh >> /tmp/script.log

I added to the example how to make the script output be added to the file and you could understand what went wrong there and how it works.

Answer 3

Where is
#!/bin/bash on
the first line?
And the script still needs to be made executable.