Composer Error

Hi I have error composer in my server

root@server1 ~]# /opt/cpanel/composer/bin/composer diagnose

Fatal error: Uncaught Error: Call to undefined function Symfony\Component\Console\proc_close() in phar:///opt/cpanel/composer/bin/composer/vendor/symfony/console/Terminal.php:168
Stack trace:
#0 phar:///opt/cpanel/composer/bin/composer/vendor/symfony/console/Terminal.php(146): Symfony\Component\Console\Terminal::readFromProcess('stty -a | grep ...')
#1 phar:///opt/cpanel/composer/bin/composer/vendor/symfony/console/Terminal.php(112): Symfony\Component\Console\Terminal::getSttyColumns()
#2 phar:///opt/cpanel/composer/bin/composer/vendor/symfony/console/Terminal.php(95): Symfony\Component\Console\Terminal::initDimensionsUsingStty()
#3 phar:///opt/cpanel/composer/bin/composer/vendor/symfony/console/Terminal.php(52): Symfony\Component\Console\Terminal::initDimensions()
#4 phar:///opt/cpanel/composer/bin/composer/vendor/symfony/console/Application.php(140): Symfony\Component\Console\Terminal->getHeight()
#5 phar:///opt/cpanel/composer/bin/composer/src/Composer/Console/Application.php(139): Symfony\Component\Console\Application->run(NULL, Object(Symfony\Component\Console\Output\ConsoleOutput))
#6 phar:///opt/cpanel/composer/bin/composer/bin/composer(88): Composer\Console\Application->run()
#7 /opt/cpanel/composer/bin/composer(29): require('phar:///opt/cpa...')
#8 {main}
  thrown in phar:///opt/cpanel/composer/bin/composer/vendor/symfony/console/Terminal.php on line 168
[root@server1 ~]#

Any solution to make composer work?