illegal cyclic inheritance involving trait Iterable_2种解决方式

/Users/liyangda/Code/DemoProject/demo-scala/src/scala/old04/T4.scala:11:20
illegal cyclic inheritance involving trait Iterable
    val value= List(1, 2, 3, 4, 5, 6, 7, 8)

<build>
    <finalName>SparkCoreTest</finalName>
    <plugins>
        <plugin>
            <groupId>net.alchim31.maven</groupId>
            <artifactId>scala-maven-plugin</artifactId>
            <version>3.4.6</version>
            <executions>
                <execution>
                    <goals>
                        <goal>compile</goal>
                        <goal>testCompile</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>