使用fonttools varLib.mutator 提取字重报错

[subframe7536]

> fonttools varLib.mutator ResourceHanRoundedSC-VF.otf wght=450 ROND=100 -o regular.otf
Location: {'wght': 450.0, 'ROND': 100.0}
Loading variable font
Normalized location: {'wght': 0.47503662109375, 'ROND': 0.0}
Mutating CFF2 table
Mutating FeatureVariations
Mutating GDEF/GPOS/GSUB tables
Traceback (most recent call last):
……
fontTools.varLib.errors.InconsistentGlyphOrder:

Couldn't merge the fonts, because the glyph order was inconsistent between
masters. This happened while performing the following operation:
GPOS.table.LookupList.Lookup[6]

使用slice显示不支持ROND
请问有解决方法吗？