Error using API Create PagesProject with pulumi - Err 'You must set a production branch.'

import { PagesProject, type PagesProjectArgs } from '@pulumi/cloudflare'

const projectName = 'spa-cf'
const CLOUDFLARE_ACCOUNT_ID = process.env.CLOUDFLARE_ACCOUNT_ID
const CLOUDFLARE_API_TOKEN = process.env.CLOUDFLARE_API_TOKEN

const pagesProjectConfig: PagesProjectArgs = {
    accountId: CLOUDFLARE_ACCOUNT_ID,
    name: projectName,
    productionBranch: 'main',
    buildConfig: {
        buildCaching: true,
        buildCommand: 'bun run build',
        destinationDir: '../apps/spa/dist',
        rootDir: '../apps/spa',
    },
}

export const pagesProject = new PagesProject(projectName, pagesProjectConfig)

🚀 ~ file: pages.ts:58 ~ createProject ~ url: https://api.cloudflare.com/client/v4/accounts/xxxx/pages/projects
🚀 ~ file: pages.ts:58 ~ createProject ~ request: {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    Authorization: 'Bearer XXX'
  },
  body: '{"accountId":"XXXX","name":"spa-cf","productionBranch":"main","buildConfig":{"buildCaching":true,"buildCommand":"bun run build","destinationDir":"../apps/spa/dist","rootDir":"../apps/spa"}}'

import { PagesProject, type PagesProjectArgs } from '@pulumi/cloudflare'

const projectName = 'spa-cf'
const CLOUDFLARE_ACCOUNT_ID = process.env.CLOUDFLARE_ACCOUNT_ID
const CLOUDFLARE_API_TOKEN = process.env.CLOUDFLARE_API_TOKEN

const pagesProjectConfig: PagesProjectArgs = {
    accountId: CLOUDFLARE_ACCOUNT_ID,
    name: projectName,
    productionBranch: 'main',
    buildConfig: {
        buildCaching: true,
        buildCommand: 'bun run build',
        destinationDir: '../apps/spa/dist',
        rootDir: '../apps/spa',
    },
}

export const pagesProject = new PagesProject(projectName, pagesProjectConfig)

🚀 ~ file: pages.ts:58 ~ createProject ~ url: https://api.cloudflare.com/client/v4/accounts/xxxx/pages/projects
🚀 ~ file: pages.ts:58 ~ createProject ~ request: {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    Authorization: 'Bearer XXX'
  },
  body: '{"accountId":"XXXX","name":"spa-cf","productionBranch":"main","buildConfig":{"buildCaching":true,"buildCommand":"bun run build","destinationDir":"../apps/spa/dist","rootDir":"../apps/spa"}}'

Initial deployment triggered: {
  result: null,
  success: false,
  errors: [ { code: 8000033, message: 'You must set a production branch.' } ],
  messages: []
}

Initial deployment triggered: {
  result: null,
  success: false,
  errors: [ { code: 8000033, message: 'You must set a production branch.' } ],
  messages: []
}