Fatal error: Unsupported operand types in ResourceCaster::castStream #23151
Description
| Q | A |
|---|---|
| Bug report? | yes |
| Feature request? | no |
| BC Break report? | no |
| RFC? | no |
| Symfony version | 3.3.2 |
I have the following standard logging configuration for dev environment:
monolog:
handlers:
main:
type: stream
path: '%kernel.logs_dir%/%kernel.environment%.log'
level: debug
channels: ['!event']
console:
type: console
process_psr_3_messages: false
channels: ['!event', '!doctrine', '!console']
server_log:
type: server_log
process_psr_3_messages: false
host: 127.0.0.1:9911
I found the problem that when a 500th error occurs (because of the PHP Fatal error – Call to a member function getCategory() on null), the web debug toolbar is not loaded, and then pop-up appears with the text: "An error occurred while loading the web debug toolbar (404: Not Found)".
In the error log, I found that another fatal error occurs in the ResourceCaster::castStream method:
Unsupported operand types in .../vendor/symfony/symfony/src/Symfony/Component/VarDumper/Caster/ResourceCaster.php on line 44
Here's the code snippet that leads to the error:
$a = stream_get_meta_data($stream) + static::castStreamContext($stream, $a, $stub, $isNested);
I think that it is worth doing the validation of the value of $a and the result of castStreamContext before adding them to solve this problem. How do you think?
My logs here:
error.txt
And, by the way, if you pay attention to the logs, you can find another problem:
Warning: call_user_func() expects parameter 1 to be a valid callback, cannot access private method Symfony\Bridge\Monolog\Handler\ServerLogHandler::nullErrorHandler() in .../vendor/symfony/symfony/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php on line 205
I think the nullErrorHandler method should be public.