I have a problem with downgrading to the previous version, what should I do?
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Welcome to Ubuntu 20.04.4 LTS (GNU/Linux 5.4.0-107-generic x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
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System information as of Wed Jun 1 14:59:18 UTC 2022
System load: 0.0 Users logged in: 0
Usage of /: 4.4% of 77.36GB IPv4 address for eth0: 188.166.97.74
Memory usage: 51% IPv4 address for eth0: 10.18.0.5
Swap usage: 0% IPv4 address for eth1: 10.110.0.2
Processes: 140
62 updates can be applied immediately.
38 of these updates are standard security updates.
To see these additional updates run: apt list --upgradable
Last login: Wed Jun 1 14:34:04 2022 from 188.217.79.109
magento@RUGGERI:~$ composer self-update 1.10.16
Upgrading to version 1.10.16 (stable channel).
In SelfUpdateCommand.php line 493:
Filesystem exception:
Composer update failed: "/usr/local/bin/composer" could not be written.
rename(/home/magento/.cache/composer/composer-temp7116477.phar,/usr/local/bin/composer): Permission denied
self-update [-r|--rollback] [--clean-backups] [--no-progress] [--update-keys] [--stable] [--preview] [--snapshot] [--1] [--2] [--2.2] [--set-channel-only] [--] [<version>]
magento@RUGGERI:~$