Sentry and Symfony error handlers conflicts

[alexander-schranz]

Environment

How do you use Sentry? self-hosted/on-premise

sentry/sdk                                 3.1.1 
sentry/sentry                              3.4.0      
sentry/sentry-symfony                      4.2.7 

Steps to Reproduce

Have a symfony project with deprecations:

Run console command which triggers deprecation e.g.:

bin/console cache:clear

Output is normally:

Install sentry / sentry bundle run again:

bin/console cache:clear

It looks for me there is some conflicts between symfony error handler (think it handles also deprecations) and the sentry error handler.

In our case we already had disabled the error_listener but it does not have any effects depending on sentry symfony monolog integration:

config/packages/sentry.yaml

```yaml sentry: dsn: "%env(SENTRY_DSN)%" register_error_listener: false # Disable ErrorListener to avoid duplicated events because of monolog handler options: attach_stacktrace: true # Attach stacktrace to monolog events that do not include an exception send_default_pii: true # Include personally identifiable information like user, cookies and headers integrations: - 'Sentry\Integration\IgnoreErrorsIntegration' # monolog configuration for sentry # see also: https://docs.sentry.io/platforms/php/guides/symfony/ monolog: handlers: sentry: type: sentry level: !php/const Monolog\Logger::ERROR hub_id: Sentry\State\HubInterface services: Monolog\Processor\PsrLogMessageProcessor: tags: { name: monolog.processor, handler: sentry } Sentry\Integration\IgnoreErrorsIntegration: arguments: $options: ignore_exceptions: - 'Symfony\Component\HttpKernel\Exception\NotFoundHttpException' ```

This issue is maybe related to: https://github.com/getsentry/sentry-symfony/issues/337 and maybe a register_error_handler: false suggested by @Jean85 could fix this issue. But I'm not sure 100% sure it seems to appear only since symfony 5.4/6.0 release and the other issue seems to be older.

Expected Result

Do not output the deprecation notices.

Actual Result

Outputs the deprecation notices.

[Jean85]

Yes, our error handler and Symfony's interact weirdly, it would be better if we could proceed with #337

[github-actions[bot]]

This issue has gone three weeks without activity. In another week, I will close it.

But! If you comment or otherwise update it, I will reset the clock, and if you label it Status: Backlog or Status: In Progress, I will leave it alone ... forever!

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"A weed is but an unloved flower." ― Ella Wheeler Wilcox 🥀