non-project file, only JDK classes are added to its build path

[provide a description of the issue]

Environment

• Operating System: window 11
• JDK version: 17
• Visual Studio Code version: 1.90
• Java extension version: v0.27.0

Steps To Reproduce

1. [step 1] clone project
2. [step 2] set datasource (/redisChat/src/main/resources/application.yml)
   (I was using h2 in this project.)
3. [step 3] run redisChatApplication.java

[Please attach a sample project reproducing the error]
https://github.com/0gon/hung_chit_chat
[Please attach logs]

Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
        SpringApplication cannot be resolved

        at com.redis.redisChat.demo.RedisChatApplication.main(RedisChatApplication.java:10)

Current Results

Added two modules to practice the msa method. kafkaChat, redischat.
It works fine on the pc that created the project, but I try to clone it and run it on another pc, so I can't get spring boot dependency.

Estimated results

Maybe when I clone it, I don't think I recognize the folder as a module or project, but as a simple folder.

I've looked in many directions. But I'm sorry I'm a beginner, and I don't know any more because I lack clues.

Additional Informations

Commencez par le projet hung_chit_chat lié, ses modules et redisChat/src/main/resources/application.yml ; exécutez ensuite RedisChatApplication.java dans VS Code en utilisant les versions de JDK et des extensions signalées. Comparez le comportement du projet cloné avec l’erreur SpringApplication non résolue signalée. La tâche est terminée lorsque la cause de la dépendance Spring Boot manquante ou de la reconnaissance du projet est documentée et que l’application clonée peut résoudre ses dépendances.