TRPC function invocation timeout

I have a trpc mutation with a long task that takes like 40 60 s but it gets timed out hhhh

I did this in my Vercel. json

"functions": {
    "app/api/**/*": {
      "maxDuration": 300
    }
  }

"functions": {
    "app/api/**/*": {
      "maxDuration": 300
    }
  }

didn't work.

making this a route handler ll take time

...

any ideas

please??

TRPC function invocation timeout - tRPC