qiime2 plugins for WSL

How to solve the problem: Error: QIIME 2 has no plugin/command named 'demux'.
After running the following:
$ qiime demux summarize
--i-data fmt-tutorial-demux-1.qza
--o-visualization demux-summary-1.qzv
qiime demux summarize
--i-data fmt-tutorial-demux-2.qza
--o-visualization demux-summary-2.qzv
Error: QIIME 2 has no plugin/command named 'demux'.
Error: QIIME 2 has no plugin/command named 'demux'.
(using-qiime2)

Hello!
Welcome to the forum!

Could you provide some details about your qiime2 installation? Which distribution and version did you install?