This FiveM script doesnt use a framework, and it implements the txAdmin panel in game with the command /admin
add_ace identifier.steam:steamidhere "txadmin.menu.perm" allow
add_ace identifier.rockstar:licensehere "txadmin.menu.perm" allow
Also have in mind you cant use the FiveM login as they reject the iframe request.
To have the latest features always make sure you are using the LATEST (not latest recommended nor optional) version of FXServer artifacts.
No, i did not make txAdmin