Unable to run php artisan serve due to problem in backup.php file

[ghost]

After successfully creating the backup of my project when i ran php artisan serve i get this error:

eye-100@eye100-To-Be-Filled-By-O-E-M:~/Documents/Laravel/laravel_online_shop$ php artisan serve
In backup.php line 183:
syntax error, unexpected token ",", expecting ";"

If i put a semi-colon as it is expecting, i get this error:

eye-100@eye100-To-Be-Filled-By-O-E-M:~/Documents/Laravel/laravel_online_shop$ php artisan serve
In backup.php line 192:
syntax error, unexpected token "=>"

Now i don't want to mess up the backup.php file.Here is the contents of the backup.php file:

<?php

return [

    'backup' => [

        /*
         * The name of this application. You can use this name to monitor
         * the backups.
         */
        'name' => env('APP_NAME', 'laravel-backup'),

        'source' => [

            'files' => [

                /*
                 * The list of directories and files that will be included in the backup.
                 */
                'include' => [
                    base_path(),
                ],

                /*
                 * These directories and files will be excluded from the backup.
                 *
                 * Directories used by the backup process will automatically be excluded.
                 */
                'exclude' => [
                    base_path('vendor'),
                    base_path('node_modules'),
                ],

                /*
                 * Determines if symlinks should be followed.
                 */
                'follow_links' => false,

                /*
                 * Determines if it should avoid unreadable folders.
                 */
                'ignore_unreadable_directories' => false,

                /*
                 * This path is used to make directories in resulting zip-file relative
                 * Set to `null` to include complete absolute path
                 * Example: base_path()
                 */
                'relative_path' => null,
            ],

            /*
             * The names of the connections to the databases that should be backed up
             * MySQL, PostgreSQL, SQLite and Mongo databases are supported.
             *
             * The content of the database dump may be customized for each connection
             * by adding a 'dump' key to the connection settings in config/database.php.
             * E.g.
             * 'mysql' => [
             *       ...
             *      'dump' => [
             *           'excludeTables' => [
             *                'table_to_exclude_from_backup',
             *                'another_table_to_exclude'
             *            ]
             *       ],
             * ],
             *
             * If you are using only InnoDB tables on a MySQL server, you can
             * also supply the useSingleTransaction option to avoid table locking.
             *
             * E.g.
             * 'mysql' => [
             *       ...
             *      'dump' => [
             *           'useSingleTransaction' => true,
             *       ],
             * ],
             *
             * For a complete list of available customization options, see https://github.com/spatie/db-dumper
             */
            'databases' => [
                'mysql',
            ],
        ],

        /*
         * The database dump can be compressed to decrease disk space usage.
         *
         * Out of the box Laravel-backup supplies
         * Spatie\DbDumper\Compressors\GzipCompressor::class.
         *
         * You can also create custom compressor. More info on that here:
         * https://github.com/spatie/db-dumper#using-compression
         *
         * If you do not want any compressor at all, set it to null.
         */
        'database_dump_compressor' => null,

        /*
         * If specified, the database dumped file name will contain a timestamp (e.g.: 'Y-m-d-H-i-s').
         */
        'database_dump_file_timestamp_format' => null,

        /*
         * The file extension used for the database dump files.
         *
         * If not specified, the file extension will be .archive for MongoDB and .sql for all other databases
         * The file extension should be specified without a leading .
         */
        'database_dump_file_extension' => '',

        
            /*
             * The compression algorithm to be used for creating the zip archive.
             *
             * If backing up only database, you may choose gzip compression for db dump and no compression at zip.
             *
             * Some common algorithms are listed below:
             * ZipArchive::CM_STORE (no compression at all; set 0 as compression level)
             * ZipArchive::CM_DEFAULT
             * ZipArchive::CM_DEFLATE
             * ZipArchive::CM_BZIP2
             * ZipArchive::CM_XZ
             *
             * For more check https://www.php.net/manual/zip.constants.php and confirm it's supported by your system.
             */
            'compression_method' => ZipArchive::CM_DEFAULT,

            /*
             * The compression level corresponding to the used algorithm; an integer between 0 and 9.
             *
             * Check supported levels for the chosen algorithm, usually 1 means the fastest and weakest compression,
             * while 9 the slowest and strongest one.
             *
             * Setting of 0 for some algorithms may switch to the strongest compression.
             */
            'compression_level' => 9,

            /*
             * The filename prefix used for the backup zip file.
             */
            'filename_prefix' => '',

            /*
             * The disk names on which the backups will be stored.
             */
            'disks' => [
                'local',
            ],
        ],

        /*
         * The directory where the temporary files will be stored.
         */
        'temporary_directory' => storage_path('app/backup-temp'),

        /*
         * The password to be used for archive encryption.
         * Set to `null` to disable encryption.
         */
        'password' => env('BACKUP_ARCHIVE_PASSWORD'),

        /*
         * The encryption algorithm to be used for archive encryption.
         * You can set it to `null` or `false` to disable encryption.
         *
         * When set to 'default', we'll use ZipArchive::EM_AES_256 if it is
         * available on your system.
         */
        'encryption' => 'default',

        /**
         * The number of attempts, in case the backup command encounters an exception
         */
        'tries' => 1,

        /**
         * The number of seconds to wait before attempting a new backup if the previous try failed
         * Set to `0` for none
         */
        'retry_delay' => 0,
    ];

    /*
     * You can get notified when specific events occur. Out of the box you can use 'mail' and 'slack'.
     * For Slack you need to install laravel/slack-notification-channel.
     *
     * You can also use your own notification classes, just make sure the class is named after one of
     * the `Spatie\Backup\Notifications\Notifications` classes.
     */
    'notifications' => [
    \Spatie\Backup\Notifications\Notifications\BackupHasFailedNotification::class => ['mail'],
    \Spatie\Backup\Notifications\Notifications\UnhealthyBackupWasFoundNotification::class => ['mail'],
    \Spatie\Backup\Notifications\Notifications\CleanupHasFailedNotification::class => ['mail'],
    \Spatie\Backup\Notifications\Notifications\BackupWasSuccessfulNotification::class => ['mail'],
    \Spatie\Backup\Notifications\Notifications\HealthyBackupWasFoundNotification::class => ['mail'],
    \Spatie\Backup\Notifications\Notifications\CleanupWasSuccessfulNotification::class => ['mail'],
],


        /*
         * Here you can specify the notifiable to which the notifications should be sent. The default
         * notifiable will use the variables specified in this config file.
         */
        'notifiable' => \Spatie\Backup\Notifications\Notifiable::class,

        'mail' => [
            'to' => 'your@example.com',

            'from' => [
                'address' => env('MAIL_FROM_ADDRESS', 'hello@example.com'),
                'name' => env('MAIL_FROM_NAME', 'Example'),
            ],
        ],

        'slack' => [
            'webhook_url' => '',

            /*
             * If this is set to null the default channel of the webhook will be used.
             */
            'channel' => null,

            'username' => null,

            'icon' => null,

        ],

        'discord' => [
            'webhook_url' => '',

            /*
             * If this is an empty string, the name field on the webhook will be used.
             */
            'username' => '',

            /*
             * If this is an empty string, the avatar on the webhook will be used.
             */
            'avatar_url' => '',
        ],
    ],

    /*
     * Here you can specify which backups should be monitored.
     * If a backup does not meet the specified requirements the
     * UnHealthyBackupWasFound event will be fired.
     */
    'monitor_backups' => [
        [
            'name' => env('APP_NAME', 'laravel-backup'),
            'disks' => ['local'],
            'health_checks' => [
                \Spatie\Backup\Tasks\Monitor\HealthChecks\MaximumAgeInDays::class => 1,
                \Spatie\Backup\Tasks\Monitor\HealthChecks\MaximumStorageInMegabytes::class => 5000,
            ],
        ],

        /*
        [
            'name' => 'name of the second app',
            'disks' => ['local', 's3'],
            'health_checks' => [
                \Spatie\Backup\Tasks\Monitor\HealthChecks\MaximumAgeInDays::class => 1,
                \Spatie\Backup\Tasks\Monitor\HealthChecks\MaximumStorageInMegabytes::class => 5000,
            ],
        ],
        */
    ],

    'cleanup' => [
        /*
         * The strategy that will be used to cleanup old backups. The default strategy
         * will keep all backups for a certain amount of days. After that period only
         * a daily backup will be kept. After that period only weekly backups will
         * be kept and so on.
         *
         * No matter how you configure it the default strategy will never
         * delete the newest backup.
         */
        'strategy' => \Spatie\Backup\Tasks\Cleanup\Strategies\DefaultStrategy::class,

        'default_strategy' => [

            /*
             * The number of days for which backups must be kept.
             */
            'keep_all_backups_for_days' => 7,

            /*
             * The number of days for which daily backups must be kept.
             */
            'keep_daily_backups_for_days' => 16,

            /*
             * The number of weeks for which one weekly backup must be kept.
             */
            'keep_weekly_backups_for_weeks' => 8,

            /*
             * The number of months for which one monthly backup must be kept.
             */
            'keep_monthly_backups_for_months' => 4,

            /*
             * The number of years for which one yearly backup must be kept.
             */
            'keep_yearly_backups_for_years' => 2,

            /*
             * After cleaning up the backups remove the oldest backup until
             * this amount of megabytes has been reached.
             */
            'delete_oldest_backups_when_using_more_megabytes_than' => 5000,
        ],

        /**
         * The number of attempts, in case the cleanup command encounters an exception
         */
        'tries' => 1,

        /**
         * The number of seconds to wait before attempting a new cleanup if the previous try failed
         * Set to `0` for none
         */
        'retry_delay' => 0,
    ],

];

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Tell me why it is happening and how to fix it?