I have the following crontab on my mac OS Catalina 10.15.1 :
```
* * * * * /Users/username/Desktop/cronjob.sh > /Users/username/Desktop/cronjob.log 2>&1
```
Within the command file is:
```
#!/bin/bash

touch /tmp/foo
```

However I was left with the following line inside `cronjob.log`
```
/bin/bash: /Users/username/Desktop/cronjob.sh: Operation not permitted

```

---
Why is operation not permitted event though the permissions for `cronjob.sh` is set to `+x`?