Getting tons of PHP Warnings: undefined script name

[27-Mar-2022 13:30:09 UTC] PHP Warning: Undefined array key “SCRIPT_NAME” in /home/username/public_html/wp-content/plugins/cache-enabler/inc/cache_enabler_engine.class.php on line 205

[27-Mar-2022 13:45:03 UTC] PHP Warning: Undefined array key “SCRIPT_NAME” in /home/username/public_html/wp-content/plugins/cache-enabler/inc/cache_enabler_engine.class.php on line 203

This happens over and over : today, 170 times in a row.

The script that’s called is :

/**
     * When Cache Enabler is updated (deprecated).
     *
     * @since       1.4.0
     * @deprecated  1.8.0
     */
    public static function on_cache_enabler_update() {
ERROR HERE ————— THIS IS LINE 203
        self::each_site( is_multisite(), 'Cache_Enabler_Disk::clean' );
ERROR HERE ————— THIS IS LINE 205
        Cache_Enabler_Disk::setup();

        self::clear_complete_cache();
    }

Any idea why this is happening? I love the simplicity of Cache Enabler, but I can’t keep having these issues as I’m trying to reduce resource usage on our site.

Thanks very much!