nemmo\attachments\Module::detachFile PHP Method

    public function detachFile($id)
    {
        /** @var File $file */
        $file = File::findOne(['id' => $id]);
        if (empty($file)) {
            return false;
        }
        $filePath = $this->getFilesDirPath($file->hash) . DIRECTORY_SEPARATOR . $file->hash . '.' . $file->type;
        // this is the important part of the override.
        // the original methods doesn't check for file_exists to be
        return file_exists($filePath) ? unlink($filePath) && $file->delete() : $file->delete();
    }