NameError: Method not available report - drupal

Question

I made the web service to communicate two applications odoo12 and drupal. when i try to retrieve a report in odoo12 from drupal, i get this error message:
-Drupal:
Le site Web a rencontré une erreur inattendue. Veuillez essayer de nouveau plus tard.</br></br><em class="placeholder">Zend\XmlRpc\Client\Exception\FaultException</em>: Traceback (most recent call last):
File "C:\odoo-12.0\odoo\addons\base\controllers\rpc.py", line 63, in xmlrpc_2
response = self._xmlrpc(service)
File "C:\odoo-12.0\odoo\addons\base\controllers\rpc.py", line 43, in _xmlrpc
result = dispatch_rpc(service, method, params)
File "C:/odoo-12.0\odoo\http.py", line 121, in dispatch_rpc
result = dispatch(method, params)
File "C:/odoo-12.0\odoo\service\model.py", line 34, in dispatch
raise NameError("Method not available %s" % method)
NameError: Method not available report
in <em class="placeholder">Zend\XmlRpc\Client->call()</em> (line <em class="placeholder">325</em> of <em class="placeholder">vendor\zendframework\zend-xmlrpc\src\Client.php</em>). <pre class="backtrace">Jsg\Odoo\Odoo->getReport('crm_ong.report_recufiscal', 0, 'qweb-pdf') (Line: 124)
-Odoo:
Traceback (most recent call last):
File "C:/odoo-12.0\odoo\http.py", line 121, in dispatch_rpc
result = dispatch(method, params)
File "C:/odoo-12.0\odoo\service\model.py", line 34, in dispatch
raise NameError("Method not available %s" % method)
NameError: Method not available report
-code drupal
public function submitForm(array &$form, FormStateInterface $form_state) {
global $id_don;
global $client;
$id_don = (int) $form_state->getValues()['id_don'];
$model = "crm.alima.don";
$ids = [$id_don];
$report_data=$client->getReport('crm_solthis.report_recufiscal', $id_don, 'qweb-pdf');
header('Content-Type: application/pdf');
echo $report_data;die();
header('Content-Type: text/css');
header("Content-Disposition: attachment; filename=RecuFiscal.pdf");
}

Answer 1

The report service has been removed from Odoo since version 11.0.
Relevant commits : c23ef9a, 3425752.
I just inspected Odoo client used by Drupal and it appears the code doesn't take these changes into account :
# from function getReport()
$client = $this->getClient('report');
$reportId = $client->call('report', $params);
To fix your issue, don't use getReport, I guess it's still possible to grab some data for your model and print kind of a report by tweaking the method from the client.
I suggest to switch to the object endpoint to get a generic XmlRpcClient on which you might be able to call render().
For example you can use search() to get a reportId in the first place (no more report service but ir.actions.report model still available), and then try to read/render it like in this example (this is not 'client' code relative to Odoo but you get the idea).