this script is good for 2 hours and then stop working without errors... how can I resolve

import selfcore from "selfcore";
const client = new selfcore('Token')
const gateway = new selfcore.Gateway('Token');
gateway.on("message",(m) => {
    if(m.channel_id  === ""){
    let content = m.content ? m.content : {embeds : [m.embeds[0]]};
    client.sendWebhook("URL",m.channel_id + content);
    };
    
});