failed to generate json: Recursion detected

[ezandonai]

failed to generate json: Recursion detected

[lode]

I guess the trace contains too much data to pass through json_encode() in a nice way.

There's two workarounds I can think of:

1. skip the trace:

$options = ['includeExceptionTrace' => false];
$document = ErrorsDocument::fromException($exception, $options);

This completely ignores the trace and thus prevents this issue. However, you won't see any trace in the response.

2. filter the output and pass it as new input to sendResponse():

// get the data which would be send as response
$responseArray = $document->toArray();

// filter out what you don't want
foreach ($responseArray['errors'] as &$error) {
	if (isset($error['meta']['trace']) === false) {
		continue;
	}
	
	foreach ($error['meta']['trace'] as &$trace) {
		if (isset($trace['args']) === false) {
			continue;
		}
		
		foreach ($trace['args'] as $index => &$argument) {
			if ($argument instanceof Laravel\Lumen\Application) {
				unset($trace['args'][$index]);
			}
		}
	}
}

// convert array to json
$options = ['array' => $responseArray];
$responseJson = $document->toJson($options);

// pass custom json to send as response
$options = ['json' => $responseJson];
$document->sendResponse($options);

Obviously, this is more cumbersome and less performant.

[ezandonai]

Well, looking better, I found that the problem occurs when trying to turn exceptions into a json.
This line on Document file. into toJson method.

This occurs because the trace has a Laravel\Lumen\Application instance.
Like can be see it below:

I don't know why or how fix this.
Somebody can help me?