I get "Invariant Violation" every time i try to run this

[sebolek]

I get "Invariant Violation" every time i try to run this
Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined.
when i run "yarn run dev"

am I doing something wrong?

[ssetem]

The examples over here are more up to date.

https://github.com/searchkit/searchkit-examples