'build.plugins.plugin.version' for org.apache.maven.plugins:maven-compiler-plugin is missing. @ line 39, column 21 code example

Example: build.plugins.plugin.version

<!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin -->
<dependency>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-compiler-plugin</artifactId>
  <version>3.8.1</version>
</dependency>