nuxt 3 + cloudfare D1 problems with env.d.ts file

I’m using nuxt 3 with cloudfare D1, but I have encountered some problems.

It seems that it cannot read env.d.ts file I have created.
I’m getting this error:

500 Cannot read properties of undefined (reading ‘env’)

I used this repo:
https://github.com/tlebeitsuk/nuxt-cloudflare-lucia

My configured env.d.ts file

import { CfProperties, Request, ExecutionContext, KVNamespace, D1Database } from '@cloudflare/workers-types';

declare module 'h3' {
    interface H3EventContext {
        cf: CfProperties,
        cloudflare: {
          request: Request,
          env: {
            MY_KV: KVNamespace,
            DB: D1Database,
          }
          context: ExecutionContext,
        };
    }
}

And here is middleware->auth.ts

import { verifyRequestOrigin } from "lucia"
import { initializeLucia } from "../utils/auth"
import type { User, Session } from "lucia"

let lucia: ReturnType<typeof initializeLucia>

export default defineEventHandler(async (event) => {
  // CSRF protection
  if (!isMethod(event, "GET")) {
    const originHeader = getHeader(event, "Origin") ?? null
    const hostHeader = getHeader(event, "Host") ?? null
    if (
      !originHeader ||
      !hostHeader ||
      !verifyRequestOrigin(originHeader, [hostHeader])
    ) {
      return sendNoContent(event, 403)
    }
  }



  const { DB } = event.context.cloudflare.env

  if (!lucia) {
    lucia = initializeLucia(DB)
  }

  event.context.lucia = lucia


  const sessionId = getCookie(event, lucia.sessionCookieName) ?? null
  if (!sessionId) {
    event.context.session = null
    event.context.user = null
    return
  }

  const { session, user } = await lucia.validateSession(sessionId)
  if (session && session.fresh) {
    appendResponseHeader(
      event,
      "Set-Cookie",
      lucia.createSessionCookie(session.id).serialize()
    )
  }
  if (!session) {
    appendResponseHeader(
      event,
      "Set-Cookie",
      lucia.createBlankSessionCookie().serialize()
    )
  }

  event.context.session = session
  event.context.user = user
})

declare module "h3" {
  interface H3EventContext {
    user: User | null
    session: Session | null
    lucia: ReturnType<typeof initializeLucia>
  }
}

Specifically this part const { DB } = event.context.cloudflare.env is responsible