Strapi admin panel not found (hosted on Render)

I have a problem regarding deployement of my strapi project.I'm using Render to host it. I can get the homepage saying the production is successfull like in the image below

However, when I go to /admin, I get this:And If i try to get data from a url that I previously set up, i get this:I initially was hosting on heroku, but I switched to Render. I thing the data paths dont work because they probably got permissions reset, as I had to create another db in Render to connect it.

I should also not that the git repo linked is shared between a website and strapi.Project Tree:

Portfolio:    frontend:        ....    strapi:        my-portfolio:             normal strapi project structure    render.yaml

So this is what my render.yaml looks like : (db is named portfolio)

previewsEnabled: trueservices:  - type: web    name: strapi    env: node    plan: starter    buildCommand: cd strapi/my-portfolio && npm install && npm build    startCommand: cd strapi/my-portfolio && npm start    healthCheckPath: /_health    envVars:      - key: NODE_VERSION        value: 12.18.4      - key: NODE_ENV        value: production      - key: CLOUDINARY_NAME        sync: false      - key: CLOUDINARY_KEY        sync: false      - key: CLOUDINARY_SECRET        sync: false      - key: DATABASE_URL        fromDatabase:          name: portfolio          property: connectionString      - key: JWT_SECRET        generateValue: true      - key: ADMIN_JWT_SECRET        generateValue: truedatabases:  - name: portfolio    plan: starter

config/env/production/database.js:

const parse = require('pg-connection-string').parse;const config = parse(process.env.DATABASE_URL);module.exports = ({ env }) => ({  defaultConnection: 'default',  connections: {    default: {      connector: 'bookshelf',      settings: {        client: 'postgres',        host: config.host,        port: config.port || process.env.DATABASE_PORT,        database: config.database,        username: config.user,        password: config.password,        ssl: {          rejectUnauthorized: false,        },      },      options: {        ssl: true,      },    },  },});

config/env/production/server.js:

module.exports = ({ env }) => ({  host: env('RENDER_EXTERNAL_HOSTNAME   ', '0.0.0.0'),  port: env.int('PORT', '1337'),  url: env("MY_URL"),  admin: {    auth: {      secret: env("ADMIN_JWT_SECRET"),    },  },  });

and plugins.js has cloudinary stuff which i think is irrelevant here.

All the env are defined via render interface. I should note that process.env.DATABASE_PORT is created manually since config.port is null, and I set it to the port of the database.

Thanks in advance.