Error when pushing schema programmatically using drizzle-kit

import { integer, pgTable, text } from "drizzle-orm/pg-core";

export const items = pgTable("items", {
  pk: integer().primaryKey().generatedAlwaysAsIdentity(),
  itemText: text()
})

import ShortUniqueId from "short-unique-id"
import * as testSchema from "./testSchema"
import { $ } from "bun"
import { drizzle } from "drizzle-orm/bun-sql"
import {pushSchema} from "drizzle-kit/api-postgres"

const idGenerator = new ShortUniqueId({dictionary: "alpha_lower"})
const dbName = idGenerator.randomUUID(10)
await $`bun run ./createDatabase.ts ${dbName}`
const conn = drizzle(`postgres://${Bun.env.POSTGRES_USER}:${Bun.env.POSTGRES_PASSWORD}@postgres:5432/${dbName}`, {casing: "snake_case"})
const {apply} = await pushSchema(testSchema, conn, "snake_case")
await apply()

31588 |                         accessMethodsQuery,
31589 |                         tablespacesQuery,
31590 |                         namespacesQuery,
31591 |                         defaultsQuery
31592 |                 ]);
31593 |                 const { other: filteredNamespaces } = namespaces.reduce((acc, it$1) => {
                                                ^
TypeError: undefined is not an object (evaluating 'namespaces.reduce')
      at <anonymous> (/app/db/node_modules/drizzle-kit/api-postgres.mjs:31593:41)
      at async <anonymous> (/app/db/node_modules/drizzle-kit/api-postgres.mjs:32327:21)
      at async <anonymous> (/app/db/node_modules/drizzle-kit/api-postgres.mjs:179203:21)