the error :

Odoo Server Error

Traceback (most recent call last):
  File "/opt/odoo9/custom-addons/alwen_targa/controllers/main.py", line 70, in report_download
    filename = self.get_name_pdf(nom_complet,filename)
  File "/opt/odoo9/custom-addons/alwen_targa/controllers/main.py", line 21, in get_name_pdf
    num=nom_complet.split('/')[1]
IndexError: list index out of range

******************

source :

class Extension_ReportController(openerp.addons.report.controllers.main.ReportController):
    
    def get_name_pdf(self,nom_complet,filename):
        cr, uid, context, pool = request.cr, request.uid, request.context, request.registry
        res=filename
        type=nom_complet.split('.')[0]
        num=nom_complet.split('/')[1]
        if type == 'sale':
            sale_obj = pool['sale.order']
            sale = sale_obj.browse(cr, uid, int(num), context=context)
            if sale.state not in ['sale','done']:
                res='Devis '+num+' '+sale.partner_id.name+'.pdf'
            else :
                res='Bons de commande '+num+' '+sale.partner_id.name+'.pdf'
        if type == 'account':
            account_obj = pool['account.invoice']
            account = account_obj.browse(cr, uid, int(num), context=context)
            if account.state not in ['draft','proforma','proforma2']:
                res='Facture '+account.number.split('/')[2]+' '+account.partner_id.name+'.pdf'
            elif str(account.state) in ['proforma','proforma2']:
                res='Facture pro-forma.pdf'
            else :
                res='Facture en brouillon.pdf'
        return res
    
    @route(['/report/download'], type='http', auth="user")
    def report_download(self, data, token):
        """This function is used by 'qwebactionmanager.js' in order to trigger the download of
        a pdf/controller report.

        :param data: a javascript array JSON.stringified containg report internal url ([0]) and
        type [1]
        :returns: Response with a filetoken cookie and an attachment header
        """
        requestcontent = json.loads(data)
        url, type = requestcontent[0], requestcontent[1]
        try:
            if type == 'qweb-pdf':
                reportname = url.split('/report/pdf/')[1].split('?')[0]
                nom_complet=reportname
                docids = None
                if '/' in reportname:
                    reportname, docids = reportname.split('/')

                if docids:
                    # Generic report:
                    response = self.report_routes(reportname, docids=docids, converter='pdf')
                else:
                    # Particular report:
                    data = url_decode(url.split('?')[1]).items()  # decoding the args represented in JSON
                    response = self.report_routes(reportname, converter='pdf', **dict(data))

                cr, uid = request.cr, request.uid
                report = request.registry['report']._get_report_from_name(cr, uid, reportname)
                filename = "%s.%s" % (report.name, "pdf")
                filename = self.get_name_pdf(nom_complet,filename)
                response.headers.add('Content-Disposition', content_disposition(filename))
                response.set_cookie('fileToken', token)
                return response
            elif type =='controller':
                reqheaders = Headers(request.httprequest.headers)
                response = Client(request.httprequest.app, BaseResponse).get(url, headers=reqheaders, follow_redirects=True)
                response.set_cookie('fileToken', token)
                return response
            else:
                return
        except Exception, e:
            se = _serialize_exception(e)
            error = {
                'code': 200,
                'message': "Odoo Server Error",
                'data': se
            }
            return request.make_response(html_escape(json.dumps(error)))