Error in Maven's pom file: Failed to read artifact descriptor

<?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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>linebot</artifactId>
    <version>0.0.1 - SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>linebot</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath/><!--lookup parent from repository-->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.linecorp.bot</groupId>
            <artifactId>line-bot-api-client</artifactId>
            <version>2.0.0</version>
        </dependency>

        <dependency>
            <groupId>com.linecorp.bot</groupId>
            <artifactId>line-bot-model</artifactId>
            <version>1.20.0</version>
        </dependency>

        <dependency>
            <groupId>com.linecorp.bot</groupId>
            <artifactId>line-bot-servlet</artifactId>
            <version>1.20.0</version>
        </dependency>

        <dependency>
            <groupId>com.linecorp.bot</groupId>
            <artifactId>line-bot-spring-boot</artifactId>
            <version>1.20.0</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>