https://github.com/LimeSurvey/LimeSurvey/commit/ddde6a413a4635b41f298fb7e3b25e8adc7b1d2c#commitcomment-42694437

This only happens on v3.
V4 is fine (https://github.com/LimeSurvey/LimeSurvey/blob/master/application/libraries/jsonRPCClient.php)

https://github.com/LimeSurvey/LimeSurvey/pull/1603/

This only happens on v3.

When ? If you use the client of LimeSUrvey ?. I don't understand the way to reproduce.

PS : i use weberhofer/jsonrpcphp without any issue since years now …

When calling: $client->call('get_session_key', ...) the client calls the server method call which doesn't exist.

Where ? Who ?. What code ? Maybe this code is broken : we don't have to $client->call('get_session_key', ...), the good way is $sessionKey= $myJSONRPCClient->get_session_key( LS_USER, LS_PASSWORD );

No need ->call …

For repducing this: Run the remotecontrol::test() under application/controllers/admin/remotecontrol.php

The bug are inside the function not in Class

$client->call('get_session_key', array('admin', 'password')); must be replaced by $client->get_session_key( LS_USER, LS_PASSWORD );
$client->call('import_survey', array($sSessionKey, $sLSSData, 'lss', 'Test import by JSON_RPC')); must be replaced by $client->import_survey( $sSessionKey, $sLSSData, 'lss', 'Test import by JSON_RPC' );

………

Follow mùanual advice

Fix committed to 3.x-LTS branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=30574

Fixed in Release 3.24.1+201014