I followed below link.
I set one user permission.
When I typed 'sudo composer install' in magento root folder.
$sudo composer install Do not run Composer as root/super user! See https://getcomposer.org/root for details Loading composer repositories with package information Installing dependencies (including require-dev) from lock file Nothing to install or update Package container-interop/container-interop is abandoned, you should avoid using it. Use psr/container instead. Package phpunit/php-token-stream is abandoned, you should avoid using it. No replacement was suggested. Package sebastian/finder-facade is abandoned, you should avoid using it. No replacement was suggested. Generating autoload files 81 packages you are using are looking for funding. Use the `composer fund` command to find out more! PHP CodeSniffer Config installed_paths set to ../../magento/magento-coding-standard,../../phpcompatibility/php-compatibility