Super Reactions users collection appears empty

module.exports = {
    cooldown: 10,
    data: new ContextMenuCommandBuilder()
        .setName('Update Reactions')
        .setType(ApplicationCommandType.Message)
        .setContexts(InteractionContextType.Guild)
        .setDefaultMemberPermissions(PermissionFlagsBits.Administrator),

    async execute(interaction) {
        await interaction.deferReply({ flags: MessageFlags.Ephemeral });

        for (const reaction of interaction.targetMessage.reactions.cache.values()) {
            const reactionString = formatReaction(reaction.emoji); //Function to generate a name:id string for reactions
            console.log(reactionString);

            const reactionUsers = await reaction.users.fetch();
            console.log(reactionUsers.size);

            const reactionUserIds = reactionUsers.map(user => user.id);
            console.log(reactionUserIds);
        }
    }
};

:esmile:
2
[ '510655770866483221', '533692379777990656' ]
:Heart:
2
[ '510655770866483221', '533692379777990656' ]
:esunglasses:
3
[ '510655770866483221', '533692379777990656', '1113876215896473612' ]
😀
2
[ '510655770866483221', '533692379777990656' ]
:peeposmoke:
0
[]