Lost data when deploy strapi to heroku

Hi ,
i try deploy strapi v4.0.5 to heroku and postgres this article https://strapi.io/blog/deploying-a-strapi-api-on-heroku but when i open myapp.heroku.com … i don’t find my data just i find the name of content

in heroku : setting > Config Vars
APP_KEYS = key1,key2
NODE_ENV = prodcution

config > env > prodcution > database.js
const parse = require(‘pg-connection-string’).parse;
const config = parse(process.env.DATABASE_URL);
module.exports = ({ env }) => ({
connection: {
client: ‘postgres’,
connection: {
host: config.host,
port: config.port,
database: config.database,

  user: config.user,
  password: config.password,
  ssl: {
    rejectUnauthorized: false
  },
},
debug: false,

},
});

config > env > prodcution > server.js
module.exports = ({ env }) => ({
url: env(“MY_HEROKU_URL”),
proxy: true,
app: {
keys: env.array(“APP_KEYS”, [“testKey1”, “testKey2”]),
},
});