error processing files on windows NT system about sphinx-fortran HOT 1 OPEN

    def filter_by_srcfile(self, sfile, mode=None, objtype=None, **kwargs):
...
        for b in self.crack:
            if objtype and objtype != 'all' and b['block'] not in objtype:
                continue
            bfile = b['from']  # new line
            if os.name != 'nt' or not os.path.isfile(bfile):  # new line
                bfile = b['from'].split(':')[0]  # remove module name  / new line
            if mode != 'strict':
                bfile = os.path.basename(bfile)
...