Rename(/usr/lib64/plesk-9.0/composer.phar): failed to open stream: Permission denied

Question

I tried to run the composer self-update method and I'm getting this error message and I'm not sure where to start to fix this issue:

rename(/usr/lib64/plesk-9.0/composer.phar): failed to open stream: Permission denied

Answer 1

You don't have permission to update the plesk version of composer manually but it also should not be necessary:

Plesk installs the updates for Composer once a week

Source

If you need the latest version now, I recommend to install it in the project or in your home directory. For example:

• Download composer.phar from https://getcomposer.org
• Save it as ~/bin/composer
• Use composer (or ~/bin/composer if ~/bin is not in your PATH) instead of composer.phar from Plesk

With this instance, you also can use selfupdate.