React page is not showing when there is an error, is there any method that we can use to see the actual error?

React page is not showing when there is an error, is there any method that we can use to see the actual error.

trying to built a simple game on the base of react. that work like lottery ticket

import { getTicket, sum } from "./helper";
import "./Lottery.css";
import { useState, useEffect, useRef } from "react";
import party from "party-js";

export default function Lottery() {
    let [ticket, setTicket] = useState(getTicket(3));
    let isWining = sum(ticket);
    const winnerRef = useRef(null);

    useEffect(() => {
        if (isWining === 15) {
            party.confetti(winnerRef.current, {
                count: party.variation.range(60, 90),
            });
        }
    }, [isWining]);
    
    let newTicket = () => {
        setTicket(getTicket(3));
    }

    return (
        <div>
            <div>
                <h1>This is a lottery game</h1>
            </div>
            <div className="Ticket">
                <span>{ticket[0]}</span>
                <span>{ticket[1]}</span>
                <span>{ticket[2]}</span>
            </div>
            {isWining === 15 ?
                <p ref={winnerRef}>Winner</p> :
                <p>Loser</p>}
            <div>
                <button onClick={newTicket}>Buy New Ticket</button>
            </div>
        </div>
    )
}

this is my code but not worked