Can i sell the script build by slim framework?

may be a silly question. i am planning to build a custom app with slim. can i sell those scripts with the licence code to the users.

will there be any copyright issue or i need to seek permission before that?

yes you can, SlimFramework is under MIT license which allow you to use it within commercial projects
check this link https://github.com/slimphp/Slim/blob/3.x/LICENSE.md