ERROR: Font has neither StemSnapV nor StdVW!

ERROR: Font has neither StemSnapV nor StdVW!

if hasattr(privateDict, "StemSnapV"):
    vstems = privateDict.StemSnapV
elif hasattr(privateDict, "StdVW"):
    vstems = [privateDict.StdVW]
else:
    if allow_no_blues:
        # dummy value. Needs to be 
        #larger than any hint will likely be,
        # as the autohint program 
        # strips out any hint wider than twice
        # the largest global stem width.
        vstems = [upm]
    else:
        raise FontParseError(
            "Font has neither StemSnapV nor StdVW!")

psautohint/otfFont.py at master · adobe-type-tools/psautohint · GitHub

    def getFontInfo(self,
         allow_no_blues,
         noFlex,
         vCounterGlyphs,
         hCounterGlyphs,
         fdIndex=0):

def get_fontinfo_list_withFDArray(
    options,
    font,
    glyph_list,
    is_var=False):

    lastFDIndex = None
    fontinfo_list = {}
    for name in glyph_list:
        # get new fontinfo string 
        # if FDarray index has changed,
        # as each FontDict has 
        # different alignment zones.
        fdIndex = font.getfdIndex(name)
        if not fdIndex == lastFDIndex:
            lastFDIndex = fdIndex
            fddict = font.getFontInfo(
                          options.allow_no_blues,
                          options.noFlex,
                          options.vCounterGlyphs,
                          options.hCounterGlyphs,
                          fdIndex)
            fontinfo = fddict.getFontInfo()
        fontinfo_list[name] = (fontinfo, None, None)

    return fontinfo_list

psautohint/autohint.py at master · adobe-type-tools/psautohint · GitHub