About SpringBoot + React connect app deploy to Heroku

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1

I have successfully deployed the SpringBoot + React connect app (war) to Heroku, but when visiting https://myapp.herokuapp.com/atlassian-connect.json, it returned 404, also can not install this plugin in Jira Cloud.

May I ask where the mistake was made?
I couldn’t find the packaging and deployment instructions for the springboot connect app.

2

Finally, I have successfully deployed! It is because SpringBoot has set the war packaging tomcat dependency incorrectly.