Comment 0 for bug 929001

 Example: "Żółty"

Full message:

Traceback (most recent call last):
  File "render_barcode_qrcode.py", line 1068, in <module>
    e.affect()
  File "C:\Users\User\AppData\Local\Temp\Rar$EX00.713\inkscape\share\extensions\inkex.py", line 227, in affect
    self.effect()
  File "render_barcode_qrcode.py", line 1058, in effect
    grp = inkex.etree.SubElement(self.current_layer, 'g', grp_attribs) #the group to put everything in
  File "lxml.etree.pyx", line 2437, in lxml.etree.SubElement (src/lxml/lxml.etree.c:47345)
  File "apihelpers.pxi", line 210, in lxml.etree._makeSubElement (src/lxml/lxml.etree.c:11391)
  File "apihelpers.pxi", line 205, in lxml.etree._makeSubElement (src/lxml/lxml.etree.c:11327)
  File "apihelpers.pxi", line 283, in lxml.etree._initNodeAttributes (src/lxml/lxml.etree.c:12162)
  File "apihelpers.pxi", line 1242, in lxml.etree._utf8 (src/lxml/lxml.etree.c:19848)
ValueError: All strings must be XML compatible: Unicode or ASCII, no NULL bytes