Clustering error - Solr 8.2

[Joe Obernberger]

Hi All - trying to use clustering with SolrCloud 8.2, but getting this 
error:

"msg":"Error from server at null: org.apache.solr.search.SyntaxError: Query Field 
'features' is not a valid field name",
The URL, I'm using is:
http://solrServer:9100/solr/DOCS/select?q=*%3A*&qt=/clustering&clustering=true&clustering.collection=true
  
<http://cronus:9100/solr/UNCLASS_2018_5_19_184/select?q=*%3A*&qt=/clustering&clustering=true&clustering.collection=true>

Thanks for any ideas!

Complete response:
{
  "responseHeader":{
    "zkConnected":true,
    "status":400,
    "QTime":38,
    "params":{
      "q":"*:*",
      "qt":"/clustering",
      "clustering":"true",
      "clustering.collection":"true"}},
  "error":{
    "metadata":[
      "error-class","org.apache.solr.common.SolrException",
      "root-error-class","org.apache.solr.common.SolrException",
      
"error-class","org.apache.solr.client.solrj.impl.BaseHttpSolrClient$RemoteSolrException",
      
"root-error-class","org.apache.solr.client.solrj.impl.BaseHttpSolrClient$RemoteSolrException"],
    "msg":"Error from server at null: org.apache.solr.search.SyntaxError: Query 
Field 'features' is not a valid field name",
    "code":400}}


-Joe