| 1 | <?php  | 
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| 9 | class WorkerQueueCallback implements QueueCallbackInterface  | 
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| 10 | { | 
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| 11 | private $queueService;  | 
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| 12 | |||
| 13 | public function __construct(QueueServiceInterface $queueService)  | 
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| 17 | |||
| 18 | /**  | 
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| 19 | * @return QueueServiceInterface  | 
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| 20 | */  | 
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| 21 | public function getQueueService()  | 
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| 25 | |||
| 26 | /**  | 
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| 27 | * @return \Closure  | 
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| 28 | */  | 
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| 29 | public function toClosure()  | 
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| 37 | }  | 
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| 38 | 
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: