Illegal string offset 'value'

[Sparkxxx]

Hello, There seams to be a problem and I'm unable to trace it: Supervisord version 3.3.1 #php api output API Version: 3.0 ApiClients\Client\Supervisord\Resource\Sync\State statecode: 1 statename: RUNNING log cleared Identification: supervisor PID: 29894 $program = current($client->programs()); //Calling this gives the error

PHP Warning: Illegal string offset 'value' in /home/xxx/vendor/api-clients/xml-rpc-service/src/XmlRpcPayloadParser.php on line 42

PHP Notice: Uninitialized string offset: 0 in /home/xxx/vendor/api-clients/xml-rpc-service/src/XmlRpcPayloadParser.php on line 42

PHP Fatal error: Uncaught Rx\React\RejectedPromiseException: Promise rejected with non-exception in /home/xxx/vendor/reactivex/rxphp/src/React/Promise.php:88

Is there a versioning mismatch between the api and xml-rpc? What can be done? Thank you.