Sveltekit Prop shows for a second then goes away

I'm definitely very new to this so apologies if it's a simple answer.

// treatment.jsimport { writable } from 'svelte/store';export const treatment_uuid = writable('');export const treatment_name = writable('');export const error = writable('');

// +page.server.jsimport { supabase } from '$lib/supabaseClient';import { treatment_uuid, treatment_name, error } from '$stores/treatment';export async function load({ params }) {  console.log('Params:', params);  const { data, error: fetchError } = await supabase    .from('treatments')    .select('*')    .eq('name', params.name)    .single();  if (fetchError) {    console.log('Error fetching data:', fetchError.message);    error.set(fetchError.message);    return { props: {} };  }  console.log('Data fetched from Supabase:', data);  treatment_uuid.set(data.uuid);  treatment_name.set(data.name);  console.log('Returning treatment_uuid:', data.uuid);  console.log('Returning treatment_name:', data.name);  return {    props: {}  };}

<!-- +page.svelte --><script>  import { treatment_uuid, treatment_name, error } from '$stores/treatment';  import { get } from 'svelte/store';  console.log('Received props:', {    treatment_uuid: get(treatment_uuid),    treatment_name: get(treatment_name),    error: get(error)   });</script><main><h1>Treatment Details</h1>  {#if $error}<p>Error: {$error}</p>  {:else}<p>Treatment UUID: {$treatment_uuid}</p><p>Treatment Name: {$treatment_name}</p>  {/if}</main>

This is the output I get and it shows the data for a second then goes to:

Params: { name: 'HIL-214' }Data fetched from Supabase: { uuid: 'd2397937-7a10-461c-a476-a7627965d2c1', name: 'HIL-214' }Returning treatment_uuid: d2397937-7a10-461c-a476-a7627965d2c1Returning treatment_name: HIL-214Received props: {  treatment_uuid: 'd2397937-7a10-461c-a476-a7627965d2c1',  treatment_name: 'HIL-214',  error: ''}

Treatment DetailsTreatment UUID: (for a second the right UUID is here then blank)Treatment Name: (for a second the right name is here then blank)

Tried different methods to pass the data into it and most just have '' or undefined. This is the first the data has actually shown up even if just temporarily.