sveltekit api fetch from frontend not work

component

+page.svelte

const checklink = async (id: number) => {
    try {
        const testLink = await fetch(

)
        return await testLink.json()
    } catch (error) {
        throw error
    }
}

export const GET = async ({ params }) => {
    const checkLink = async (id: string) => {
        try {
            const testLink = await fetch(

https://domainlink/${id}

https://linkb/${id}