rg.apache.http.conn.HttpHostConnectException: Connect to raw.githubusercontent.com:443 [raw.githubusercontent.com/0.0.0.0, raw.githubusercontent.com/0:0:0:0:0:0:0:0] failed: about ros-mobile-android HOT 1 OPEN

`buildscript {
    apply from: "https://github.com/rosjava/rosjava_bootstrap/raw/kinetic/buildscript.gradle"
    dependencies {
        classpath 'com.android.tools.build:gradle:4.2.0'
    }
}
`

`rootProject.buildscript {
    String rosMavenPath = System.getenv("ROS_MAVEN_PATH")
    String rosMavenRepository = System.getenv("ROS_MAVEN_REPOSITORY")
    repositories {
        if (rosMavenPath != null) {
            rosMavenPath.tokenize(":").each { path ->
                maven {
                    // We can't use uri() here because we aren't running inside something
                    // that implements the Script interface.
                    url "file:${path}"
                }
            }
        }
        maven {
            url "http://repository.springsource.com/maven/bundles/release"
        }
        maven {
            url "http://repository.springsource.com/maven/bundles/external"
        }
        if (rosMavenRepository != null) {
            maven {
                url rosMavenRepository
            }
        }
        maven {
            url "https://github.com/rosjava/rosjava_mvn_repo/raw/master"
        }
        google()
        jcenter()
    }
    dependencies {
        classpath "org.ros.rosjava_bootstrap:gradle_plugins:[0.3,0.4)"
    }
}`

`<Error>
<Code>NoSuchKey</Code>
<Message>The specified key does not exist.</Message>
<Key>maven/bundles/release</Key>
<RequestId>9B3K2YT4XACH70KR</RequestId>
<HostId>yE5zWxIiWoceRRIJI+ttQVy7EX/BlloUtypjSmV+Fb+KV0IvEqbETOoHdsz9XFx8lvtGpkLJzLk=</HostId>
</Error>`

`<Error>
<Code>NoSuchKey</Code>
<Message>The specified key does not exist.</Message>
<Key>maven/bundles/external</Key>
<RequestId>8RZBXEWS2RXEP26N</RequestId>
<HostId>DX4SG+Djfv5jWb0bzezjMiV7Bu2TDOUKGCFi6HZ5ETkN1jWI9VTV3cdqzQpbBR7kAamlSmfRIMs=</HostId>
</Error>`

the output ：
`404 this is not web page you are looking for`