kibana安装elastalert插件安装失败

kibana安装elastalert插件安装失败，如图，求指点，在线等，kibana版本是7.3.2
 
/usr/local/elk/kibana-7.3.2# ./bin/kibana-plugin install https://github.com/bitsensor/e ... 2.zip --allow-root
Attempting to transfer from https://github.com/bitsensor/e ... 2.zip
Transferring 25616568 bytes
Transfer complete
Retrieving metadata from plugin archive
Error: end of central directory record signature not found
    at /usr/local/elk/kibana-7.3.2/node_modules/yauzl/index.js:187:14
    at Immediate.<anonymous> (/usr/local/elk/kibana-7.3.2/node_modules/yauzl/index.js:624:38)
    at runCallback (timers.js:705:18)
    at tryOnImmediate (timers.js:676:5)
    at processImmediate (timers.js:658:5)
Plugin installation was unsuccessful due to error "Error retrieving metadata from plugin archive"