Captain01012 My PHP is already 7.3 but why showing this error? flarum/core[v1.2.0, ..., v1.2.1] require php >=7.3 -> your php version (7.2.34) does not satisfy that requirement.
Gatsu You need to update php version in ssh. You have php 7.3 only webserver. https://help.dreamhost.com/hc/en-us/articles/214202148-How-do-I-change-the-PHP-version-my-shell-uses-
