lunr language "ja" doesn't work

I would like to use the lunr language [en,ja]. Search bar was disabled and javascript console showed errors

Uncaught TypeError: lunr.TinySegmenter is not a constructor
    at lunr-languages.js:390:21
    at lunr-languages.js:340:14
    at lunr-languages.js:342:2
lunr.js:6 Uncaught Error: Cannot load unregistered function: stemmer-jp
    at lunr.js:6:3566
    at Array.forEach (<anonymous>)
    at Function.e.Pipeline.load (lunr.js:6:3494)
    at Function.e.Index.load (lunr.js:6:16055)
    at initSearch (search-ui.js:216:51)
    at search-index.js:1:1

My use packages are following

@antora/cli: 3.0.1
@antora/site-generator: 3.0.1
@antora/lunr-extension@1.0.0-alpha.6

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information