Odoo 8.0 Print Invoice Error
Hi at all,
I have a running odoo 8.0 system. At one Sales Order I get the following Error.
File "/usr/lib/python2.7/dist-packages/openerp/models.py", line 5320, in ensure_one raise except_orm("ValueError", "Expected singleton: %s" % self) QWebException: "ValueError Expected singleton: account.invoice.tax(728, 727)" while evaluating "translate_doc(doc_id, doc_model, 'partner_id.lang', 'account.report_invoice_document')"
I tried to reproduce it but without success, neither I found a solution.
Does anyone has an idea, how I can solve this and print the Invoice PDF?