Hello ! 

I have a bit of a problem, I want to generate some to retrieve the binary of my pdf and then display it to the user.

but with this request :

$reportName = 'account.report_invoice';

        $data = $encoder->encode([[$this->erp_invoice_id], $reportName]);

        $client = new Client($this->config['server_url'] . 'object');

        $client->setOption(Client::OPT_RETURN_TYPE, XMLParser::RETURN_PHP);

        $response = $client->send(

            new Request('execute_kw', [

                new Value($this->config['database']),

                new Value($this->config['uid'], Value::$xmlrpcInt),

                new Value($this->config['pass']),

                new Value('report'),

                new Value('get_pdf'),

                $data

            ])

        );

I get this error :

Error fetching PDF: Invalid response payload (you can use the setDebug method to allow analysis of the response) XML error 9: Invalid character at line 9, column 13

I have the impression that the problem comes from the data I'm receiving, but how do I manage this?
Thanks for your help !