If you added PHP-FPM 8.3, you have to move forward the user config files from 8.1 or 8.2, editing their contents to reflect the proper version...
cp /opt/alt/php-fpm82/usr/etc/php-fpm.d/users/user.conf /opt/alt/php-fpm83/usr/etc/php-fpm.d/users/user.conf
nano /opt/alt/php-fpm83/usr/etc/php-fpm.d/users/user.conf
Change the socket and slowlog references to the new 8.3 version:
[user]
listen = /opt/alt/php-fpm83/usr/var/sockets/frogstew.sock
listen.allowed_clients = 127.0.0.1
;listen.owner = "user"
listen.group = "nobody"
listen.mode = 0660
user = "user"
group = "user"
;request_slowlog_timeout = 15s
;slowlog = /opt/alt/php-fpm83/usr/var/log/php-fpm-slowlog-user.log
pm = ondemand
pm.max_children = 4
pm.max_requests = 4000
pm.process_idle_timeout = 15s
;listen.backlog = -1
;request_terminate_timeout = 0s
rlimit_files = 131072
rlimit_core = unlimited
catch_workers_output = yes
env[HOSTNAME] = $HOSTNAME
env[TMP] = /home/user/tmp
env[TMPDIR] = /home/user/tmp
env[TEMP] = /home/user/tmp
env[PATH] = /usr/local/bin:/usr/bin:/bin