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**Category:** Rails\
**Created:** [November 1, 2009, 3:12pm UTC](https://www.ruby-forum.com/t/getting-blank-404-html-and-500-html-pages/178262 "2009-11-01T15:12:14Z")\
**Posts on this page:** 3\
**Page:** 1
**Author:**  [@newmonarch](https://www.ruby-forum.com/u/newmonarch)\
**Post date:** [November 1, 2009, 3:12pm UTC](https://www.ruby-forum.com/t/getting-blank-404-html-and-500-html-pages/178262/1 "2009-11-01T15:12:14Z")
Hey guys. I’ve a pretty experienced Rails developer, but I’ve never
seen this one before. I’m not getting my custom error pages to serve
up under Passenger. They worked just fine in an earlier version of my
app, but somewhere along the way, they stopped working. Instead, I’m
just seeing a blank white screen with no content. There’s nothing in
the logs that indicates what’s going on.
Any ideas on how to debug? Thanks!
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**Author:**  [@newmonarch](https://www.ruby-forum.com/u/newmonarch)\
**Post date:** [November 1, 2009, 3:50pm UTC](https://www.ruby-forum.com/t/getting-blank-404-html-and-500-html-pages/178262/2 "2009-11-01T15:50:54Z")
Yeah, I’ve viewed the source. The response is literally an empty
string. No content at all.
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**Author:**  [@newmonarch](https://www.ruby-forum.com/u/newmonarch)\
**Post date:** [November 1, 2009, 3:29pm UTC](https://www.ruby-forum.com/t/getting-blank-404-html-and-500-html-pages/178262/3 "2009-11-01T15:29:14Z")
2009/11/1 NewMonarch [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):
> Hey guys. Â I’ve a pretty experienced Rails developer, but I’ve never
> seen this one before. Â I’m not getting my custom error pages to serve
> up under Passenger. Â They worked just fine in an earlier version of my
> app, but somewhere along the way, they stopped working. Â Instead, I’m
> just seeing a blank white screen with no content. Â There’s nothing in
> the logs that indicates what’s going on.
Have you tried viewing the source in the the browser (View, Page
source or similar) to see if there is something being sent that is not
displayed for some reason such as invalid html.
Also you could revert back to previous versions of the app till they
work again and see what was changed.
Colin