Sort field tokenized

gistfile1.txt

// Query:
{
      "query": {
        "query_string": {
          "default_field": "general",
          "query": "*"
        }
      },
      "from": "0",
      "size": "10",
      "sort": {
        "sort": "asc"
      }
}

// Schema:

{
        'tenantId': { 'type': 'string', 'store': 'no', 'index': 'not_analyzed' },
        'name': { 'type': 'string', 'store': 'yes', 'index': 'no' },
        'description': { 'type': 'string', 'store': 'yes', 'index': 'no' },
        'visibility': { 'type': 'string', 'store': 'yes', 'index': 'not_analyzed' },
        'general': { 'type': 'string', 'store': 'no', 'index': 'analyzed' },
        'sort': { 'type': 'string', 'store': 'no', 'index': 'not_analyzed' },
        'access': {
            'properties': {
                'principalId': { 'type': 'string', 'store': 'no', 'index': 'not_analyzed' }
            }
        }
 }

// Error:

data: {
      "error": "SearchPhaseExecutionException[Failed to execute phase [query_fetch], total failure; shardFailures {[aiDFbmCjQWukWq5G9vF21g][oae][0]: QueryPhaseExecutionException[[oae][0]: query[ConstantScore(NotDeleted(*:*))],from[0],size[10],sort[<custom:\"sort\": org.elasticsearch.index.field.data.strings.StringFieldDataType$1@2f5a0e96>]: Query Failed [Failed to execute main query]]; nested: IOException[Can't sort on string types with more than one value per doc, or more than one token per field]; }]",
      "status": 500
    }