Uncaught Error: no such method 'instance'

Can you try enabling debug on your site, and send in the logs through our contact form?

Here’s how to get debug enabled:
https://docs.akismet.com/general/how-do-i-debug-the-akismet-plugin/

And our contact form:
https://akismet.com/contact

Hi – I was just about to raise a bug when I noticed this looks like the same problem I am having.
I think the problem I’m experiencing is between It looks like Akismet 3.0.4 and WordPress SEO 1.7.1.
Happy to run the Debug too if it helps you resolve this issue.

Tried to turn on debug but it’s not generating the debug.log ??
I’ve send my login via the contact form if you want to look at it.

The error is not breaking anything but it’s something that you may want to look.

Hi Yuzairy.

I added this to my wp.config file (make sure it appears before ” /* That’s all, stop editing! Happy blogging. */ “)

*/
define(‘WP_DEBUG’, true);

define(‘WP_DEBUG_LOG’, true);

// Disable display of errors and warnings
define(‘WP_DEBUG_DISPLAY’, false);
@ini_set(‘display_errors’,0);

I wasn’t seeing a debug file at first either, but I found if I went to the Akismet plugin (on your WordPress site’s installed plugins) then put https://www.yoursite.com/wp-content/debug.log in the browser and I could see the debug log.

@yuzairy: I have confirmed that I can reproduce the error on your site when only Akismet, WordPress SEO, and MemberMouse are active. Debug Bar doesn’t seem to be involved.

I am 99% sure the error is occurring because MemberMouse includes its own version of jQuery UI (which it should not do), and it’s conflicting with the version of jQuery UI that is already included by core. MemberMouse also does some other things (like var $ = jQuery; in global.js) that could already be causing problems or will cause problems eventually. You should contact them about fixing that up.

@majato: I can’t reproduce with just Akismet and WordPress SEO; what other plugins do you have installed?

Loads……..Contact Form 7, CSS3 Responsive Web Pricing Tables Grids, Dynamic Vouchers, GT-Vouchers, Simple Ads Manager, Social Connect, TPC! Memory Usage, Ubermenu 2, W3 Total Cache, WP Smush.It.

I have tried deactivating them all except Akismet and WordPress SEO, however, the error still occurs (of course, if I only have WordPress SEO active the bug does not occur.)

I sent a dubug file earlier.

@cfinke: Thanks! Will pass the message to them.

@majato: I didn’t see any error with Akismet + WordPress SEO activated either on my vanilla install.

@yuzairy: Have you heard anything back on this matter? I’ve recently experienced this same issue. I contacted Membermouse about the issue, but they don’t seem to think there’s anything wrong.

I’ve found that the patch mentioned by Nigel Fish in this thread works in the interim until a proper patch has been applied.

Marking as resolved, since the problem lies in another plugin and is being addressed in that support forum.