.findAllbyid(name) to filter data +kotlin+android

Question

im trying to make search fun using getmapping and .findallnbyid(name) i cannot pass name here is my code:

@GetMapping("/student/find{name}")
fun SearchData(@PathVariable("name") name: String): ResponseEntity<ArrayList<Student>>
{

   val dataFromDatabase=studentRepository.findAllById(name)

    val dataarraylist=ArrayList<Student>()
    dataFromDatabase.forEach{
        dataarraylist.add(it)
    }

    return ResponseEntity.ok(dataarraylist)
}
what's name problem  !!?
someone help please
here is the imag error

i expecet funcrtion to return Array list