A example login screen for adminlte-2-react with formik and yup https://github.com/sd1337/adminlte-2-react
Require Formik and Yup: https://github.com/jaredpalmer/formik https://github.com/jquense/yup
npm install formik
or
yarn add formik
and
npm install yup
or
yarn add yup
the title on the code you provide is Sperat how to change to AdminLTE
or please send me a example on how to use the adminlte-2-react