I have a CentOS 6 + cPanel VPS and when I try to install WordPress to a newly purchased domain through Installatron, I get a following error message (I tried older versions of WP, but the result is the same):
! The selected version 5.3.2 is not compatible with the selected install location.
php-mbstring 1- (detected: OFF)
I was installing WP on my domains in the past and never had a similar problem.
You need to check in WHM and make sure you have the mbstring PHP extension installed (via EasyApache) - If I had to guess you upgraded PHP but it didn't bring in all the extensions
Once your issue is resolved,
please be sure to come back and click accept for the solution