Blank White Pages

I am having the same problem. Definitely caused by W3T. Fine for logged in users, but white screen for everyone else. It was working fine until last week.

I just installed also. The database and Objects cache seemed to be working. But the Page cache delivers an Error 500 blank page. Turning off Page cache or logging in, sends the page just fine.

No meaningful error in error_log.

I believe this is a symptom of the same problem that I was seeing in this post:

https://www.ads-software.com/support/topic/w3tc-disk_enhanced-page-caching-gzip-debugging?replies=1

The blank screen appears for users that are not logged in. To further confirm, in chrome, you can go to developer view, network/headers and confirm that the “Accept-encoding: gzip, deflate, sdch” is present in the request header, and the response header is something like:

HTTP/1.1 200 OK
Server: nginx
Date: Wed, 19 Jun 2013 20:44:21 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: PHP/5.3.25
Vary:
Content-Encoding: gzip

“Unable to send the support request.”

Guess I’ll have to wait and see what answers get posted here.

Too bad, I had hoped to use Elasticache with Total Cache.

I’ll look for another solution.

Interesting datapoint.

I uninstalled W3 Total Cache and added Wp Fast Cache. Guess what?

Same blank screen when cache enabled for non-logged in users!!! After logging out… I get ONE good download, then refreshing get blank page. This time a 200 OK message, but no data.

Something similar between these two caching programs is causing same symptoms.

I deactivated WP Fast Cache and the problem still occurred. Looked in .htaccess, and removed all the code that they put in, similar wat WP Total Cache inserted there also.

Things are back to normal now, without caching. Something in the .htaccess file from both cache solutions is breaking the functionality.

I don’t understand how being logged in changes what happens in the .htaccess file?

After further diagnostics, it appears that the cache is getting a blank page inserted into it. So it delivers a blank page. By using WP Fast Cache I was able to see blank pages going into the cache and errors finally showing up.

My problem is something with my Apache setup, as I’m running just on a public IP number and the AWS instance is running on a local IP, and so the plugin cannot retrieve the page to cache it.

I couldn’t tell if WP Total cache is having the same problem, but I’m sure it is. So this is not a caching bug, but a server config issue, which I’ll work out later.

Thanks everyone for listening.

Let me know what you find out because I see to be having a similar problem. Here’s where I posted about it:

https://www.ads-software.com/support/topic/w3-total-cache-causing-page-not-to-load?replies=1

And here’s my site:

https://dappledthings.me

Please let me know if you figure this out and can help me. Thanks. ??

Oh, I just realized that logging in doesn’t help my problem at all. Once logged out or browser cache is deleted, I never get anything other than the blank page even if I do log back in. ??

I’ve had to turn Page Cache Debug off to get my page to load. Unfortunately, my page performance dropped back to where it was before installing and activating WCTC. I noticed you commented on another post about having to revert back to the earlier version of W3TC, but unfortunately I just installed the newest version and don’t have the earlier version. Let me know if you hear anything. ??

well, I’ll just take this oportunity to transfer my question to this topic, since its on the same issue pretty much, and more people seem to be having the problem:

As you may know, the Debug mode for Page Cache is causing the “blank page” problem, to a few people.

To me, I dont get the error if I have Page Cache enabled without the Debug Mode. But how can I test if the feature is actually working?

Thanks.

@marcosmyara: Please continue with your previous topic: https://www.ads-software.com/support/topic/site-is-stuck-with-old-content-cant-update?replies=2