A problem ;-;

I’m still learning Kotlin for mobile development (my level is basic). But today when one tried to create a button it seems that he was not imported, you know how i can resolve?

https://preview.redd.it/83su39kijgb81.png?width=783&format=png&auto=webp&s=11e9eadc18b224c25bece9504cdfd6be36cebf17

https://preview.redd.it/0y1zo8kijgb81.png?width=655&format=png&auto=webp&s=4d0d2c37b75ef0b53383b4822f43cfdc6a612920