This component(rlanvin/php-ip) requires the 'gmp' extension.

What is GMP extension in PHP?
GMP stands for GNU Multiple Precision Arithmetic Library (GMP). GMP is a library supported in PHP that allows you to do mathematical operations on signed integers, rational numbers, and floating point numbers.

Fatal error: Uncaught Error: Call to undefined function PhpIP\gmp_init() in /var/www/html/phpkobo/research/php-downloaded-apps/php-ip/vendor/rlanvin/php-ip/src/IP.php:163 Stack trace: #0 /var/www/html/phpkobo/research/php-downloaded-apps/php-ip/vendor/rlanvin/php-ip/src/IP.php(134): PhpIP\IP::initGmpFromInt(294967295) #1 /var/www/html/phpkobo/research/php-downloaded-apps/php-ip/task.php(18): PhpIP\IP->__construct(294967295) #2 /var/www/html/phpkobo/research/php-downloaded-apps/php-ip/task.php(33): main() #3 {main} thrown in /var/www/html/phpkobo/research/php-downloaded-apps/php-ip/vendor/rlanvin/php-ip/src/IP.php on line 163