Feature/app 390 fix runtime errors

[ingoCollatz]

No description provided.

[jaensen]

Looks good. Only one remark:
In one case you used

import { get } from 'svelte/store'

and then

      const $me = get(me)

in the other case you left

    let $me: Profile;
    me.subscribe((m) => ($me = m))();

which in principle is fine. But using the get() shorthand everywhere would surely have been nicer (I know, the latter was by me 😂).