/PHP/Composer install : Your requirements could not be resolved to an installable set of packages

Composer install : Your requirements could not be resolved to an installable set of packages

apt-get install php-gd

Laravel Your requirements could not be resolved to an installable set of packages.

//Install Necessary PHP Extensions
apt-get install php7.4-gmp 
apt-get install php-curl
sudo apt-get install php7.4-zip
sudo apt-get install php-mbstring -y
sudo apt-get install php-xml -y
//Restart Apache Server
sudo service apache2 restart

Source: stackoverflow.com

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