Vercel connections timeout when using a transaction

import { drizzle as drizzlePg } from 'drizzle-orm/node-postgres';
import { Pool } from 'pg';

import * as schema from './schema';
import { getXataClient } from './xata';

export const xata = getXataClient();

const pool = new Pool({
  connectionString: xata.sql.connectionString,
  max: 1,
});

export const db = drizzlePg(pool, {
  schema,
});

const pool = new Pool({
  connectionString: xata.sql.connectionString,
  max: 1,
  maxUses: 1,
  connectionTimeoutMillis: 5000,
  idleTimeoutMillis: 1000,
  allowExitOnIdle: true,
});