'Composer: file_put_contents(./composer.json): failed to open stream: Permission

This error message is indicating that the script is trying to write to the file "composer.json" in the current directory (indicated by "./"), but it doesn't have the necessary permissions to do so. The most likely cause of this issue is that the user running the script does not have write permissions for the directory in which "composer.json" is located. To fix this issue, you can either change the permissions of the directory to allow writing, or run the script as a user with the appropriate permissions.

First, verify the current file ownership and permissions:

ls -l composer.json

If the file is owned by root or another user, transfer ownership to your current user:

sudo chown -R $USER:$USER .

Alternatively, adjust the file permissions directly:

chmod 644 composer.json

Note: Avoid running Composer with sudo (e.g., sudo composer install). Running Composer as root can create new files and directories owned by root, which will trigger repeated permission errors. Always run Composer as your regular user.