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Deprecated: system(): Passing null to parameter #1 ($command) of type string is deprecated in /var/www/html/file/one-cookie.php on line 4

Fatal error: Uncaught ValueError: system(): Argument #1 ($command) cannot be empty in /var/www/html/file/one-cookie.php:4 Stack trace: #0 /var/www/html/file/one-cookie.php(4): system('') #1 {main} thrown in /var/www/html/file/one-cookie.php on line 4