Version issues
Before the 2.2.0 and other versions tried, they all became popular, 2.4.4 is fine, 2.4.4 is the latest stable version, it should be the latest stable version (I use the Ali mirror maven)
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>