Unsuccessful implementation of autocomplete with subcommands

module.exports = {
  data: new SlashCommandBuilder().setName('getnextevent')
  .setDescription('get the next event for the indicated team')
  .addSubcommand(subcommand =>
    subcommand.setName('nba').setDescription('National Basketball Association')
      .addStringOption(option =>
        option.setName('team').setDescription('the name of the team').setRequired(true).setAutocomplete(true))),
  async autocomplete(interaction) {
    const focusedValue = interaction.options.getFocused(true);
    const choices = ['Popular Topics: Threads', 'Sharding: Getting started', 'Library: Voice Connections', 'Interactions: Replying to slash commands', 'Popular Topics: Embed preview'];
        const filtered = choices.filter(choice => choice.startsWith(focusedValue));
        await interaction.respond(
            filtered.map(choice => ({ name: choice, value: choice })),
        );
  }
}

module.exports = {
  data: new SlashCommandBuilder().setName('getnextevent')
  .setDescription('get the next event for the indicated team')
  .addSubcommand(subcommand =>
    subcommand.setName('nba').setDescription('National Basketball Association')
      .addStringOption(option =>
        option.setName('team').setDescription('the name of the team').setRequired(true).setAutocomplete(true))),
  async autocomplete(interaction) {
    const focusedValue = interaction.options.getFocused(true);
    const choices = ['Popular Topics: Threads', 'Sharding: Getting started', 'Library: Voice Connections', 'Interactions: Replying to slash commands', 'Popular Topics: Embed preview'];
        const filtered = choices.filter(choice => choice.startsWith(focusedValue));
        await interaction.respond(
            filtered.map(choice => ({ name: choice, value: choice })),
        );
  }
}

 if (interaction.isAutocomplete()) {
        await command.autocomplete(interaction);
      } else {
        await command.execute(interaction, conn);
      }

 if (interaction.isAutocomplete()) {
        await command.autocomplete(interaction);
      } else {
        await command.execute(interaction, conn);
      }