Getting a TypeError folloing this tutorial

[anixan]

Hi,

Thanks for the tutorial by the way its helped me jump into Prosmic and get and up and running to get the basics in place 😁

Im haveing an issue where the whole thing runs fine but im getting a stange build error as shown below and I cant seem to track it down and could use some help:

TypeError: undefined is not iterable (cannot read property Symbol(Symbol.iterator))
    at Function.from (<anonymous>)
    at ensure_array_like (file:///home/dev/se/.svelte-kit/output/server/chunks/index2.js:276:85)
    at children (file:///home/dev/se/.svelte-kit/output/server/chunks/index3.js:956:26)
    at slot (file:///home/dev/se/.svelte-kit/output/server/chunks/index2.js:249:5)
    at file:///home/dev/se/.svelte-kit/output/server/chunks/index3.js:592:7
    at element (file:///home/dev/se/.svelte-kit/output/server/chunks/index2.js:152:5)
    at Bounded (file:///home/dev/se/.svelte-kit/output/server/chunks/index3.js:581:12)
    at PilotGroups (file:///home/dev/se/.svelte-kit/output/server/chunks/index3.js:952:3)
    at SliceZone (file:///home/dev/se/.svelte-kit/output/server/chunks/index3.js:553:20)
    at Array._page (file:///home/dev/se/.svelte-kit/output/server/entries/pages/__preview_preview__/_uid_/_page.svelte.js:9:5)
Failed to prerender /home (status: 500, referrer: null, referenceType: linked)
  200 /home/__data.json
  200 /another-page