Please help. I finished task 1 and the additional but can't figure out the part where the program must show error.

var student,ask;
var message,out = '';
var answer;
var studentsList = [];


function print(message){
    var outputDiv = document.getElementById("output");
    outputDiv.innerHTML = message ;
}

function getStudentReport( student ) {
  var report = '<h2>Student: ' + student.name.toUpperCase() + '</h2>';
  report += '<p>Track: ' + student.track + '</p>';
  report += '<p>Points: ' + student.points + '</p>';
  report += '<p>Achievements: ' + student.achivements + '</p>';
  return report;
}

while(true){   //asking for student name or quiting program
    ask = prompt('Please type a student name or type "QUIT" to exit the program').toLowerCase();
    if(ask === null || ask === 'quit'){
        break; //quit program
    }
    for(var i = 0 ; i < students.length; i+=1){
        student = students[i];
            if(ask === student.name.toLowerCase()){ //if user is in database
                answer = true;
                message = getStudentReport( student );
                studentsList.push(message);
                print(studentsList);

           }

  if(!answer){ //if user not in database
    alert('"'+ ask + '"' + " is not in our database"); 
    }
        }

} 

document.write(" <b> Search results: " + studentsList.length + "</b>")