conection with heroku fail!! help.

[nelsoneo]

Eu consegue conectar a database no Heroku mostrando o conteúdo das tabelas mais não hora de abrir o app no Heroku https://sds3-nelsoneo.herokuapp.com/

Não exibe nada, a consulta pelo postman tampouco traz nada e tampouco consigo exibir a tabela e gráficos pelo Netlify por causa do backend. Terminei o curso no localhost consigo exibir tudo certo como foi dado no curso, mais no Heroku não consigo.

Nota: Quando fiz git subtree push --prefix backend heroku main, deu success mais também deu uns warnings que não consigue desvendar. Qualquer ajuda fico agradecido pois gostaria exibir o tudo certinho no Netlify

INFO] BUILD SUCCESS
remote: [INFO] ------------------------------------------------------------------------
remote: [INFO] Total time: 7.145 s
remote: [INFO] Finished at: 2021-11-07T21:11:24Z
remote: [INFO] ------------------------------------------------------------------------
remote: -----> Discovering process types
remote: Procfile declares types -> (none)
remote: Default types for buildpack -> web
remote:
remote: -----> Compressing...
remote: Done: 95.6M
remote: -----> Launching...
remote: Released v7
remote: https://sds3-nelsoneo.herokuapp.com/ deployed to Heroku
remote:
remote: !
remote: ! ## Warning - The same version of this code has already been built: c2a7be709d820b84bc10eba69ca647c01b9f5ca2
remote: !
remote: ! We have detected that you have triggered a build from source code with version c2a7be709d820b84bc10eba69ca647c01b9f5ca2
remote: ! at least twice. One common cause of this behavior is attempting to deploy code from a different branch.
remote: !
remote: ! If you are developing on a branch and deploying via git you must run:
remote: !
remote: ! git push heroku :main
remote: !
remote: ! This article goes into details on the behavior:
remote: ! https://devcenter.heroku.com/articles/duplicate-build-version
remote:
remote: Verifying deploy... done.
To https://git.heroku.com/sds3-nelsoneo.git

• [new branch] c2a7be709d820b84bc10eba69ca647c01b9f5ca2 -> master