Compatibility issue with Ultimate Member plugin – 406 Not Acceptable error

I’ve downloaded the Utlimate Member plugin and can’t seem to reproduce the issue, could you provide a step by step guide as to where you get the error?

Also, you might want to try disabling all plugins except WP Statistics and Ultimate Member to see if the error continues to appear.

Thanks for getting back to me.
I have tried disabling several plugins and with further troubleshooting I discovered the issue only exists if I am using Page Builder by SiteOrigin along with Black Studio TinyMCE Widget for the pages I am attempting to edit.

Note: this issue is only happening to the Account and Registration pages (two of the six pages which are automatically created with the Ultimate Member plugin).
If all plugins are activated before attempting to use Page Builder for the problem pages I cannot even switch to Page Builder:

Setup:
Have Ultimate Member (v. 1.3.13), WP Statistics (v.9.4.1), Page Builder by SiteOrigin (v.2.1.4) and Black Studio TinyMCE Widget (v. 2.2.4) (which works with Page Builder) activated.

Steps:
1. Launch Web browser (I tested with IE and Chrome)
2. Login to Website as administrator
3. Select the Dashboard, select Pages>All Pages
4. Select Edit for the Account Page
5. Select the Page Builder tab (top right of content container), if prompted, confirm you want to copy content into Page Builder.
6. Click Update button
RESULT – 406 Not Acceptable message displays and page is not saved

NOTE: at step 6, sometimes the Update button becomes disabled (likely part of the issue). If this happens, navigate away from the page and return to the page (in edit mode) and you should be able to complete the steps and see the error.

If after step four I simply edit the page (i.e., add text) via the Visual or Text (html) tabs (i.e., do not user the Page Builder function), I can save with no error.

Below reflects the behaviour I originally observed as I already had the page working in Page Builder before activating WP Statistics. These steps continue from the steps above to recreate the behaviour I initially saw:
7. From 406 error, click Home Page
8. Access Dashboard and deactivate WP Statistics
9. Again go to edit the Account page (via Pages>All pages)
10. Select the Page Builder tab (top right of content container), if prompted, confirm you want to copy content into Page Builder.
11. Click Update button – NOTE: this time the page saves
12. Reactivate WP Statistics
13. Return to the Account page and add some text to the Visual Editor container
14. Click Update Button
RESULT – 406 Not Acceptable message displays and page is not saved

ADDITIONAL OBSERVATIONS: there seems to be a few scenarios where I can successfully update the page once during a single web browser session. However subsequent edits fail and trigger the 406 Not Acceptable message. This seems to be related to having a language assigned to the page using the xili-language plugin and/or having a second version of the page and the two pages being linked.

Example Scenario (Here I can save only on initially launching the web browser.):
SETUP – I have xili-language (v. 2.19.1) activated and have added two languages (en_CA & fr_CA). I have assigned en_CA to the Account page and created the French version of this page (fr_CA) assigning this language to the page and I link the two pages. Note: for both pages I am using Page Builder to create.
Steps
1. Logout of the Website and close the Web browser
2. Relaunch Web browser
3. Login to Website as administrator
4. Navigate to Account Page in edit mode
5. Click into Visual Editor container and add some text
6. Click Done to close the container
7. Click Update
RESULT – no error (GOOD)
8. Again click into container and edit some more text and click Done to close the container
9. Click Update
RESULT – 406 Not Acceptable message displays. Only if I repeat the steps from above can I edit again on then only once per web browser session.

I hope this info helps you to reproduce the issue.
thanks again
Jill

I’ll take a look and see if I can reproduce it, but that’s a very tight corner case to debug.

Have you taken a look at your PHP/http error logs and see if there is anything related in them?

Ok, I’ve installed and followed the instructions above, but I can’t reproduce the issue.

Can you check your php/web server logs?

My guess is that there is something about your web server config causing the 406 error.

Are you running Apache? If so there are a few articles around the net suggesting to turn off mod_security if it’s enabled.

The only other thought I have is that perhaps your php “max_input_vars” setting is too low, but that seems unlikely as WP Statistics shouldn’t be adding anything to the input vars.

Closing due to inactivity.