Conflict with Spring Boot ErrorPageFilter

[Anto89]

Hello ! First, thanks a lot for your awesome library !

I didn't see that this issue has already been reported even if some are close to what I encountered.

I get a conflict with ErrorPageFilter in non-embedded containers, the result is that the Spring Boot Whitelabel Error Page doesn't display. I have an error log similar to this one :
2018-03-06 22:05:05.752 ERROR 8600 --- [nio-8080-exec-6] o.s.boot.web.support.ErrorPageFilter : Cannot forward to error page for request [/test] as the response has already been committed. As a result, the response may have the wrong status code. If your application is running on WebSphere Application Server you may be able to resolve this problem by setting com.ibm.ws.webcontainer.invokeFlushAfterService to false

The issue can easily be reproduced with a plain Spring Boot application like this one. Deploy it to Tomcat (non-embedded) and hit a path that is unknown to the server.

[whiskeysierra]

Looks like it's related to #155

[Anto89]

I tried with the latest version of Spring boot 2.0.0.RELEASE but the issue is still there.

[whiskeysierra]

Do you actually need the ErrorPageFilter?

[Anto89]

Yes, actually the company I'm working for use it to handle all exceptions that may not have been handled in specific handler classes and/or handler methods.