elastalert-test-rule报错--“Error running your filter:”

centos7.6
elasticsearch7.5.0

使用elastalert-test-rule my_rule.yaml 报错：
“WARNING:elasticsearch:GET http://172.18.10.43:9200/filebeat-*/_search?ignore_unavailable=true&size=1 [status:411 request:0.003s]
WARNING:elasticsearch:Undecodable raw error response from server: Expecting value: line 1 column 1 (char 0)
Error running your filter:
TransportError”