Target class [admin] does not exist' Laravel project - Please help

have been facing this issue on my project for past 1 week and used chatgpt for a week on this issue but still couldn't get it done yet...

anyone available to help out. the admin/dashboard shows this anything i tied login to admin dashboard

Internal Server Error

Illuminate\Contracts\Container\BindingResolutionException
Target class [admin] does not exist.