How to add in pom.xml a new block

Question

I have a root pom.xml in my study project here it is - pom.xml

I create the child pom.xml and this line is red --

project xmlns="http://maven.apache.org/POM/4.0.0"

here is a full file -

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
         http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>games</artifactId>
        <groupId>ru.job4j</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>puzzle</artifactId>

What the problem?

Answer 1

您在文件末尾缺少</project>结束标记。