Problem with configuring api endpoints with trpc

[f1schhh]

Hi, i get this errors when trying to structure my endpoints into seperate files:

And here you can see my code and structure:
api/index.ts:

api/endpoints/contacts.ts:

app.config.js:

i tried many different things. It works totally fine when i put all of my querys directly into the index.ts file in the root. But when i try to restructure and merge routers or define it this way i get the error above. I read trpc examples in the documentation but still gets this problem.