MDErrorReporter/exceptions/updates/MDFileIsNotWritable.php

<?PHP
/**
 * This file contains an exception class for notifying about non-writable directories.
 *
 * @author Joshua Ramon Enslin <joshua@museum-digital.de>
 */
declare(strict_types = 1);

/**
 * Custom exception class for throwing if a given file path is not writable.
 */
final class MDFileIsNotWritable extends Exception {
    /**
     * Error message.
     *
     * @return string
     */
    public function errorMessage() {
        //error message
        return 'This file or directory cannot be written: ' . $this->getMessage();

    }
}