Nuxt 3 app returns 405 Method Not Allowed

Hello, I have deployed an app using Digitalocean APP but every POST request is failing 405 Method not allowed while it’s working in local.

as per Nuxt 3 documentation, I have setup environment Variable as NITRO_PRESET=digital-ocean and similar.

/server/api/aut/login.post.ts

export default defineEventHandler(async (event) => {
  const body = await readBody<{ email: string; password: string; rememberMe: boolean }>(event)
  const config = useRuntimeConfig()

  const {
    email,
    password,
    rememberMe
  } = body

  const data = await $fetch(process.env.API_BASE_URL + "/api/token/", {
    method: "POST",
    body: body
  })

  if (data) {
      setCookie(event, 'access', data.access, {
        httpOnly: true,
        path: '/',
        sameSite: 'strict',
        secure: process.env.NODE_ENV === 'production',
        expires: rememberMe ? new Date(Date.now() + config.cookieRememberMeExpires) : new Date(Date.now() + config.cookieAccessExpires),
      })
      setCookie(event, 'refresh', data.refresh, {
        httpOnly: true,
        path: '/',
        sameSite: 'strict',
        secure: process.env.NODE_ENV === 'production',
        expires: rememberMe ? new Date(Date.now() + config.cookieRememberMeExpires) : new Date(Date.now() + config.cookieRefreshExpires),
      })
  }
  return data

})