error message: php: error while loading shared libraries: libargon2.so.1

I got this error message when I want to upgrade php from 5.6 to 7.4

php: error while loading shared libraries: libargon2.so.1: cannot open shared object file: No such file or directory

I sent these commands

wget ftp://ftp.slackware.com/pub/slackwar...3-x86_64-1.txz

upgradepkg php-7.4.3-x86_64-1.txz

nano /etc/httpd/mod_php.conf

# LoadModule php5_module lib64/httpd/modules/libphp5.so
LoadModule php7_module lib64/httpd/modules/libphp7.so

/etc/rc.d/rc.httpd stop
/etc/rc.d/rc.httpd start

php -v

php: error while loading shared libraries: libargon2.so.1: cannot open shared object file: No such file or directory

please guide me about this problem