When a customer clicks on the invoice in their customer portal, I get this:

IndexError: list index out of range

I am using Odoo9 Enterprise.

Full log:

Traceback (most recent call last):

File "/usr/lib/python2.7/dist-packages/openerp/addons/website/models/ir_http.py", line 243, in _handle_exception

response = super(ir_http, self)._handle_exception(exception)

File "/usr/lib/python2.7/dist-packages/openerp/addons/base/ir/ir_http.py", line 157, in _handle_exception

return request._handle_exception(exception)

File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 781, in _handle_exception

return super(HttpRequest, self)._handle_exception(exception)

File "/usr/lib/python2.7/dist-packages/openerp/addons/base/ir/ir_http.py", line 182, in _dispatch

result = request.dispatch()

File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 840, in dispatch

r = self._call_function(**self.params)

File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 316, in _call_function

return checked_call(self.db, *args, **kwargs)

File "/usr/lib/python2.7/dist-packages/openerp/service/model.py", line 118, in wrapper

return f(dbname, *args, **kwargs)

File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 309, in checked_call

result = self.endpoint(*a, **kw)

File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 959, in __call__

return self.method(*args, **kw)

File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 509, in response_wrap

response = f(*args, **kw)

File "/usr/lib/python2.7/dist-packages/openerp/addons/report/controllers/main.py", line 45, in report_routes

pdf = report_obj.get_pdf(cr, uid, docids, reportname, data=data, context=context)

File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 250, in wrapper

return old_api(self, *args, **kwargs)

File "/usr/lib/python2.7/dist-packages/openerp/addons/report/models/report.py", line 157, in get_pdf

html = self.get_html(cr, uid, ids, report_name, data=data, context=context)

File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 250, in wrapper

return old_api(self, *args, **kwargs)

File "/usr/lib/python2.7/dist-packages/openerp/addons/report/models/report.py", line 123, in get_html

report = self._get_report_from_name(cr, uid, report_name)

File "/usr/lib/python2.7/dist-packages/openerp/api.py", line 250, in wrapper

return old_api(self, *args, **kwargs)

File "/usr/lib/python2.7/dist-packages/openerp/addons/report/models/report.py", line 476, in _get_report_from_name

idreport = report_obj.search(cr, uid, conditions)[0]

IndexError: list index out of range