Backser you can reinstall using recommended settings:
`System requirements
Operating system: CentOS/Ubuntu/Debian/Fedora/Deepin
Make sure it is a clean operating system, and have not installed Apache/Nginx/php/MySQL from other environments
aaPanel 6.x version is developed based on centos7, It is recommended to use centos7.x
RAM : RAM requirements are at least 512MB, recommended above 768MB, pure panel accounts for about 60MB of system memory`