bumbutudor this doesn't seem specific to this extension.
You probably have executed Composer with different SSH/shell users, and as a result some of the files are not owned by the user you are currently using to run the command.
If you previously ran Composer as root, you should revert ownership of all files back to the original webserver user.
The exact steps to solve it will depend on your hosting and how you have setup shell and webserver users, or how your host has set them for you. Generally you can inspect file ownership with ls -lA, then you could use chown to change the owner back to the user that's supposed to run Composer.
