Why does this interaction option return null?

```java
// interaction.options
[@naeko-team/discord-bot start] CommandInteractionOptionResolver {
[@naeko-team/discord-bot start]   _group: 'warnings',
[@naeko-team/discord-bot start]   _subcommand: 'delete',
[@naeko-team/discord-bot start]   _hoistedOptions: [
[@naeko-team/discord-bot start]     { name: 'member', type: 'USER', value: '858367536240394259' },
[@naeko-team/discord-bot start]     {
[@naeko-team/discord-bot start]       name: 'warning',
[@naeko-team/discord-bot start]       type: 'STRING',
[@naeko-team/discord-bot start]       value: 'asssasd',
[@naeko-team/discord-bot start]       focused: true
[@naeko-team/discord-bot start]     }
[@naeko-team/discord-bot start]   ]
[@naeko-team/discord-bot start] }

// interaction.options.getUser('member')
[@naeko-team/discord-bot start] null
```

Member and user cannot have autocomplete anyway. Only string and integer can.

https://discord.com/developers/docs/interactions/application-commands#application-command-object-application-command-option-structure

https://discord.com/developers/docs/interactions/application-commands#autocomplete

old-application-commands-and-interactions

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