Apache Solr Vector Plugin Loading issue

Question

I have been trying to get this example to work on my local Apache Solr installation. However, after following all of the steps, I am getting the following error when I try to add the core:

Error CREATEing SolrCore 'XXX': Unable to create core [XXX] Caused by: org.apache.solr.search.QParserPlugin

I have tried to read the log files to get a more detailed understanding, however it just repeats the same error. What am I doing incorrectly?

I placed the solr-vector-scoring-1.0.jar in the solr/dist directory, and within the core's solrconfig.xml:

<lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-vector-scoring-1.0.jar" />

After this I placed the following line in the query parsers section:

<queryParser name="vp" class="com.github.saaay71.solr.VectorQParserPlugin" />

Within the schema.xml/managed-schema file I placed the following field type definition:

<fieldType name="VectorField" class="solr.TextField" indexed="true" termOffsets="true" stored="true" termPayloads="true" termPositions="true" termVectors="true" storeOffsetsWithPositions="true">
  <analyzer>
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.DelimitedPayloadTokenFilterFactory" encoder="float"/>
  </analyzer>
</fieldType>

And also added the following field to the same file:

<field name="vector" type="VectorField" indexed="true" termOffsets="true" stored="true" termPositions="true" termVectors="true" multiValued="true"/>