Hi,
I'm unable to install readline extension, and tried to debug through the log and install script that I found in /www/server/panel/install/readline.sh. Turns out the script is only compatible for RHEL based linux:
yum install libedit-devel -y
If you encounter this issue can fix it by installing libedit in the OS:
sudo apt install libedit-dev
Then, reinstall the readline extension again.
Hope devs can address this issue, thanks.