Unable to fetch server-side

[thislooksfun]

Describe the bug
Running await fetch('/api/v1/ping') on the server crashes with Invalid URL

Logs
See the stacktrace.

To Reproduce

<script lang="ts" context="module">
  import type { Load } from "@sveltejs/kit";

  export const load: Load = async () => {
    await fetch("/api/v1/ping");
    return {};
  };
</script>

Expected behavior
I expect that it won't crash.

Stacktraces

Stack trace

Invalid URL
TypeError [ERR_INVALID_URL]: Invalid URL
at new NodeError (node:internal/errors:363:5)
at onParseError (node:internal/url:537:9)
at new URL (node:internal/url:613:5)
at new Request (file:///Users/tlf/Programming/Node/ecs/node_modules/@sveltejs/kit/dist/install-fetch.js:1239:16)
at file:///Users/tlf/Programming/Node/ecs/node_modules/@sveltejs/kit/dist/install-fetch.js:1448:19
at new Promise ()
at fetch (file:///Users/tlf/Programming/Node/ecs/node_modules/@sveltejs/kit/dist/install-fetch.js:1446:9)
at Module.get (/Users/tlf/Programming/Node/ecs/src/lib/util.ts:2:26)
at index.svelte:8:25
at Generator.next ()

Information about your SvelteKit Installation:

Diagnostics

System:
OS: macOS 11.3.1
CPU: (16) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
Memory: 1.36 GB / 32.00 GB
Shell: 5.8 - /bin/zsh
Binaries:
Node: 16.2.0 - ~/.nvm/versions/node/v16.2.0/bin/node
npm: 7.13.0 - ~/.nvm/versions/node/v16.2.0/bin/npm
Browsers:
Firefox Developer Edition: 89.0
Safari: 14.1
npmPackages:
@sveltejs/kit: next => 1.0.0-next.110
svelte: ^3.34.0 => 3.38.2

Severity
How severe an issue is this bug to you? Is this annoying, blocking some users, blocking an upgrade or blocking your usage of SvelteKit entirely?

Very annoying, and goes directly against the documentation.

Additional context
N/A

[Conduitry]

https://kit.svelte.dev/docs#loading-input-fetch

You need to use the fetch that's passed in as an argument to load. The globally available fetch requires an absolute URL.

[thislooksfun]

Huh, odd. I was misled by the at file:///Users/tlf/Programming/Node/ecs/node_modules/@sveltejs/kit/dist/install-fetch.js:1448:19 in the stacktrace I guess. Well in any case that worked, thank you!