Is the Discord.JS Guild Member Cache Response valid in Javascript?

My bot runs a reminder system. For the past 6-8 months, this system has been working without a single issue. Recently it started to not work for a particular user, and upon investigating, when I look at my cache for the Guild it’s running off, it only returns two members. It returns my user (I do not own the Discord), and itself. I’ve never had this issue before, so I’m not sure why it’s not working. Using the Fetch method does not work, as it won’t let me send a DM to a user it fetches.

And for reference, the Guild actually has 104 members. That’s why I’m confused why it’s returning just 2.

I’ve tried using cached members, fetching members, getting the guild from the cache, finding members based on channel members.

Here is the code that the reminder system is using.

  if(settingsCheck('Reminders') === true){
    let array = fs.readdirSync(`${__dirname}/reminders/`)
    const currentDate = new Date();
    const timestampInMs = currentDate.getTime();
    const unixTimestamp = Math.floor(currentDate.getTime() / 1000);
    array.forEach(async (element) => {
      let rawData = fs.readFileSync(`${__dirname}/reminders/${element}`)
      let jsonData = JSON.parse(rawData);
      if(jsonData.time < unixTimestamp){
        await client.guilds.cache.get(config.guildID).members.cache.get(jsonData.user_id).send({ content: `<@${jsonData.user_id}> **SCHEDULED REMINDER** n<t:${jsonData.time}>: ${jsonData.reminder}`})
        fs.unlinkSync(`${__dirname}/reminders/${element}`)
        console.log(client.guilds.cache)
      }
    })
  }
}