Установите PHP 7.4
sudo apt install php7.4-common php7.4-cli php7.4-bcmath php7.4-bz2 php7.4-curl php7.4-gd php7.4-intl php7.4-json php7.4-mbstring php7.4-readline php7.4-xml php7.4-zip php7.4-fpm
Strange Stork