def google_map_img(self, cr, uid, ids, zoom=8, width=298, height=298, context=None):
partner = self.browse(cr, uid, ids[0], context=context)
params = {
- 'center': '%s, %s %s, %s' % (partner.street, partner.city, partner.zip, partner.country_id and partner.country_id.name_get()[0][1] or ''),
+ 'center': '%s, %s %s, %s' % (partner.street or '', partner.city or '', partner.zip or '', partner.country_id and partner.country_id.name_get()[0][1] or ''),
'size': "%sx%s" % (height, width),
'zoom': zoom,
'sensor': 'false',