I have included the complete notebook on my Github site, which can be found here
Step 1 - Follow Ali's tutorial to establish an Apache Solr collection called "tweets"
Step 2 - Verify the version of Apache Spark being used, and visit the Solr-Spark connector site. The key is to match the version of Spark the version of the Solr-Spark connector. In the example below, the version of Spark is 2.2.0, and the connector version is 3.4.4