わかった
extensions\sd-webui-weight-helper\scriptsのweight_helper.py内の2か所

【誤】
"BASE, IN00-IN03, IN04-IN08, MID, OUT00-OUT03, OUT04-OUT8"
"default: BASE, IN00-IN03, IN04-IN08, MID, OUT00-OUT03, OUT04-OUT8"

【正】
"BASE, IN00-IN03, IN04-IN08, MID, OUT00-OUT03, OUT04-OUT08"
"default: BASE, IN00-IN03, IN04-IN08, MID, OUT00-OUT03, OUT04-OUT08"

の誤記が原因だ、OUT8→OUT08
これで治ったよ
https://i.imgur.com/mSQn2uA.png
作者さんに誰か教えてあげて・・