captcha plugin for Participants Database HTTP Error 500

I haven’t heard a report like this before, so I don’t know what could be happening. What you need to do is see what the error on the server is, you can try taking a look at your PHP error log, you may need help from your web host for that.

The page loads without error and when I submit the form the only response I get is is the following

From access_;og
172.16.10.1 - - [24/Jun/2017:21:17:42 +0100] "POST / HTTP/1.1" 500 20 "https://xxxxxxxx.com/" "Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko"

error_log
nothing

Where else should I look?

The server error log, probably.

Does the error happen when you try to load the page with the form, or immediately when the plugin is activated?

I’ve checked the /var/log/messages and there is nothing being logged during the event.

The page loads correctly, I am able to complete the form and check the I am a human check box. When I submit the form there is a short timeout and then the I am presented with

This page isn’t working

xxxxxx.com is currently unable to handle this request.
HTTP ERROR 500

With the captcha part removed from the form everything works.
What other log files can I check?

Just in case this makes any difference some extra detail about my install. This is a multisite install and I have the both participant database and the captcha addon enabled for this particular subdomain only rather than network enabled

OK, well, Participants Database doesn’t properly support multisite yet. I have it coming out very soon, but there could be some issues with that until the next version comes out, which does support multisite.

I’ll try testing the recaptcha plugin on my multisite test site, perhaps that will shed some light on your problem.

Thanks for taking a look.

What sort of support issues are you seeing with multisite?

In terms of features, it is useful to me that there is a single participant database which all subdomains write to so I can have a unique record across all sights although I suspect this is not how everyone would like to see it working.

Bit off topic…

regards

There aren’t any specific issues that I know of with mutltisite, it’s mostly that it doesn’t take care of properly managing all the database tables.

You won’t be able to have a single database for all of the blogs in the network without some pretty significant modifications to the plugin because it uses the normal WordPress methods for accessing databases, and so that is getting switched automatically depending on which clog is being used.

Hi. I was just wondering if you had a chance to make some tests on your multisite system?

I have tried disabling other plugins to see if there is a clash but no change

Thanks

YEs, I tested it, there weren’t any problems. If you’re still having the problem with the 500, more information from your server would be helpful. If you ask your web host, it should be possible for you to take a look at your server error log right after getting the 500. There should be some information about what happened.

Thanks for taking a look. I have run the test again and this is what I get pop up in the log files. If I have missed any log files please let me know and I’ll test again.

/var/log/httpd/access.log
172.16.10.1 - - [13/Jul/2017:09:03:55 +0100] "POST / HTTP/1.1" 500 20 "https://xxxxx.com/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36"

/var/log/httpd/access.log
Nothing

/var/log/messages
Nothing

/var/log/httpd/error_log
Nothing

/var/log/httpd/ssl_error_log
Nothing

/var/log/php-errors.log
Nothing

Thanks

Nothing helpful there.

Did you try deleting the recaptcha plugin and reinstalling it fresh?

Another thing we could be looking for, although I would expect this to show up in the Apache error log, is the possibility that there is a security rule on your server that is preventing the POST request to Google that is required to validate the response. You may want to ask your web host if that could be happening.

Hi
captcha is not working in my site.
Can you plz solve this problem

What plugins do you have installed and are you running your site as a multisite install?

Anything showing up in the log files?

I have just updated to the latest version of the plugin and the issue is still there for me.

HTTP ERROR 500

Thanks