ZodError in discord.js?

Zod is a part of the discord.js builders. This is because the command names are uppercase. Make both the command name and option name lowercase

module.exports = {
    data: new SlashCommandBuilder()
        .setName('title')
        .setDescription('Bottom text')
        .addUserOption(option =>
            option.setName('subtitle')
            .setDescription('Lorem Ipsum')
            .setRequired(true)),
    async execute(interaction) {
        await interaction.reply('Not defined yet');
    },
}