To explain briefly, the code is to make already existing buttons after restart of the bot usable again, I store for this the channelId and the messageId. However, several messages are stored, therefore the foreach(), as long as only one message is stored, everything is fine when I then try to use a button, but if there are 2 or more messages, the message is sent more often, how do I fix this?

I hope anyone can help me <3

fs.readdir(folder, (err, files) => {
    files.forEach(file => {
        const r = fs.readFileSync(`${folder}/${file}`, { encoding: "utf-8" })
        const data = JSON.parse(r)

        const channel = client.channels.cache.get(data.channelId)
        channel.messages.fetch(data.messageId).then(async (message) => {
            const collector = message.channel.createMessageComponentCollector();

            collector.on('collect', async i => {
                if (i.customId === 'upvote') {
                    return i.channel.send({ content: 'A button was clicked!', components: [] });
                } else if (i.customId === 'downvote') {
                    return i.channel.send({ content: 'A button was clicked!', components: [] });
                }
            });
        })
    })
})