Logstash迁移es数据，elasticsearch-input-plugin读取错误

input {
    elasticsearch {
        hosts => [{iplist}]
        index => "{indexname}"
        size => 1000
        scroll => "5m"
      docinfo => true
    }
}
 

[ERROR][logstash.pipeline        ] A plugin had an unrecoverable error. Will restart this plugin.
  Plugin: <LogStash::Inputs::Elasticsearch hosts=>["xxxx:9200"], index=>"xxxx", size=>1000, scroll=>"5m", docinfo=>true, id=>"0c0d97f3442bde5e47448f1ac819c918d0a89dc3-1", enable_metric=>true, codec=><LogStash::Codecs::JSON id=>"json_4252917a-5d59-4bee-8d9a-240f3a16c8ac", enable_metric=>true, charset=>"UTF-8">, query=>"{ \"sort\": [ \"_doc\" ] }", docinfo_target=>"@metadata", docinfo_fields=>["_index", "_type", "_id"], ssl=>false>
  Error: [400] {"error":"ElasticsearchIllegalArgumentException[Failed to decode scrollId]; nested: IOException[Bad Base64 input character decimal 123 in array position 0]; ","status":400}