cannot resolve symbol SpringBootApplication

The "cannot resolve symbol SpringBootApplication" error typically occurs when the necessary dependencies for Spring Boot are not properly configured or missing in your project. To resolve this issue, you can follow these steps:

1. Make sure you have the correct dependencies in your project's pom.xml (for Maven) or build.gradle (for Gradle). Add the following dependency:

For Maven:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
</dependency>

For Gradle:

implementation 'org.springframework.boot:spring-boot-starter'

2. Refresh your project dependencies by either rebuilding your project or using your IDE's refresh/reload dependencies feature.

3. If you are using an IDE like IntelliJ IDEA, try invalidating caches and restarting the IDE. This can help in resolving any caching issues.

4. Check if your IDE or build tool is correctly picking up the dependencies from the repository and that your internet connection is stable.

If you have followed these steps and still encounter the error, please provide more details about your project setup, such as the IDE, build tool, and any relevant code snippets.