A very strange error

[twscott]

Hi,
This never happened before that the Fabrik list works fine in my developing site, but when in the real site, when I click on 'view data' in the back end, and when I click on the 'save' button, the browser shows "this site not sending any data, ERR_EMPTY_RESPONSE'
The screenshot is in the attachment.

So I put it to the front end, and this problem goes away.
but another error message shows as below:
==========================================
Not Acceptable
An appropriate representation of the requested resource /testSite/2017-02-17-14-10-14/2017-03-03-09-10-15/form/58/ could not be found on this server.

Additionally, a 406 Not Acceptable error was encountered while trying to use an ErrorDocument to handle the request.
================================================

Could anyone tell me where could be the problem, Thanks.

Best regards

 

[cheesegrits]

That sometimes happens if you server is running something like mod_security, and for some reason a request is triggering a deny.

Ask your host support if your server is running something like that, and if so are there any false positives in the security log matching the URL's you are loading.

The other alternative is if you have a very large form, with lots of elements, and you are hitting something like the max post vars or post size limit in PHP. Check error logs.

-- hugh