SvelteKit (Vite) + Supabase Error on from()

My supabase JS instance works for creating auth users, but when trying to do the following, my server gives me an error and quits. Unsure what this error is about 🤔
async function check_valid_urlid(urlid) {
  const { data, error } = await supabase
    .from()
    .select()

  if (error) throw new Error(error.message)
  return data;
 }

let userdata = check_valid_urlid(params.slug);
console.log(userdata);

If you are wondering, I tried with a valid database name, so it is not a problem with from() being empty. It does not seem like any request is being made.

The error:
Promise {
  <rejected> TypeError: Cannot read properties of undefined (reading 'from')
      at check_valid_urlid (/src/routes/user/[slug]/+page.js:10:14)
      at load (/src/routes/user/[slug]/+page.js:18:20)
      at load_data (file:///home/main/Coding/test/node_modules/@sveltejs/kit/src/runtime/server/page/load_data.js:238:38)
      at async file:///home/main/Coding/test/node_modules/@sveltejs/kit/src/runtime/server/page/index.js:170:13
}
/src/routes/user/[slug]/+page.js:10
            .from()
             ^
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