Spark connection failure

Hello All, I am working on a project using Neo4j. I am reading the book Graph Algorithm. Practical Examples in Apache Spark & Neo4j. I successfully installed Neo4j and other related applications, however, I can’t run/start spark-shell. I get the attached error; if you anyone could please help me with the same. Let me know if more information is required.

Please add the relevant libraries to classpath.

Sameer G