Magento expert needed for a backend issue

I need an expert to sort a simple backend issue now ... Component Manager page is always "please wait..." composer require retail-express/skylink-magento-2 Using version ^1.9 for retail-express/skylink-magento-2 ./[login to view URL] has been updated Loading composer repositories with package information Updating dependencies (including require-dev) mmap() failed: [12] Cannot allocate memory mmap() failed: [12] Cannot allocate memory Fatal error: Out of memory (allocated 450887680) (tried to allocate 20480 bytes) in phar:///opt/cpanel/composer/bin/composer/src/Composer/Repository/[login to view URL] on line 339 Bid if you can sort it now.