'solr exception Expected mime type application/octet-stream but got text/html

Hi I am trying to index an entity in solr using spring boot data solr. But i am getting exception 

    Caused by: org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at http://localhost:8983/solr/portal: Expected mime type application/octet-stream but got text/html. <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>Error 404 Not Found</title>
</head>
<body><h2>HTTP ERROR 404</h2>
<p>Problem accessing /solr/portal/publishers/update. Reason:
<pre>    Not Found</pre></p><hr><i><small>Powered by Jetty://</small></i><hr/>

</body>
</html>

This is my publisher class

    @SolrDocument
public class Publishers {

    @Id
    @Field
    private String advID;
    @Field
    private String name;
    @Field
    private String domain;
    @Field("cat")
    private String categories;

     //getters and setters
}

My repository interface

    public interface BookRepository extends SolrCrudRepository<Publishers, String> {

    List<Publishers> findByName(String name);
}

and my base URL is "http://localhost:8983/solr/portal". In my main class code is like below 

    @Resource
    BookRepository repository;
 @Override
    public void run(String... strings) throws Exception {
this.repository.save(new Publishers("4", "Sony Playstation","none", null));
}

UPDATED I have observed that the entity class i.e Publishers name is automatically appending to the URL. I don't know how to tell application not to append the name in solr URL while sending a call to solr. can anyone help me. Thanks in advance

javaspring-bootsolr


Solution 1:[1]

You should annotate your solr document as @SolrDocument(solrCoreName="YOU_CORE_NAME")

Sources

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Source: Stack Overflow

Solution Source
Solution 1 DrJunior

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