Backup via CLI

Hello,

We cannot login to our Moodle. So I'm trying to backup the courses from CLI.

I followed this instructions:

https://moodle.org/mod/forum/discuss.php?d=310227

I was able to extract the courses IDs. But when I run the backup script I see the message:

== Performing backup... ==

And then nothing happens. The file was not created and the bash shows up again.

I also followed this other instructions:

https://docs.moodle.org/38/en/Course_backup#Backup_via_CLI_for_administrators

But I get the following errors:

Status: 404 Not Found
Content-type: text/html; charset=UTF-8
No input file specified.

I appreciate your help