Can someone please help me with this javascript error?

See more:

Javascript

Visual-Studio

New to programming, copied the program as it is through a youtube tutorial, but still getting an error and unable to find the solution.

ERROR = 0: Unable to get property 'PAPER' of undefined or null reference
java.js (52,4)

Program:

function LOL(yourchoice){
console.log(yourchoice.id);

 var humanchoice, botchoice;

 humanchoice = yourchoice.id;

botchoice = num(random());

console.log("Computer Choice:", botchoice);

result = decidewinner(humanchoice, botchoice) ;
console.log(result);

message = finalmessage(result);
console.log(nessage);
//frontend = (yourchoice.id, bot, message);
}

function random(){
    return Math.floor(Math.random()*3);
}

function num(number){
    return ["ROCK", "PAPER", "SCISSORS"][number];
}

function decidewinner(yourchoice, computerchoice){
    var database = {
        "ROCK": {"SCISSORS":1, "ROCK":0.5, "PAPER":0 },
        "PAPER": {"SCISSORS":0, "ROCK":1, "PAPER":0.5 },
        "SCISSORS": {"SCISSORS":0.5, "ROCK":0, "PAPER":1 },
    };
LINE 52:
    var yourscore = database[yourchoice][computerchoice];
    var computerscore = database[computerchoice][yourchoice];

    return [yourchoice, computerscore];

}

function finalmessage([yourscore, computerscore]){
    if (yourscore=== 0){
        return ("Message:", "You LOST!", 'color:','red');
    };
    if (yourscore===1){
        return("Message:", "Hurray! You WON", "color:", "blue");
    }    else{
        return("Message:", "TIED!", "color:", "yellow");
    }
   
}

What I have tried:

Tried to check line 52 of javascript code but there is no code there.
Also, tried the whole program again 3 times, still facing same issue.