[SOLVED] New user not saving in CB Backend nor front-end

Dear Team,

Since some days I encounter a problem in saving newly created members from within the backoffice CB User management environment as well as front-end.

In the backend, on creating a new user through CB>User Management> New User, once all CB fields have been completed and I hit the 'Save' or 'Save and Close' button, I see the following message :
Despite having no new user being created in CB, I do however see a new user being created in the Joomla Use environment.

This error seems also to block creation of new users through the front end. The CB joomla user database tool also detects this when running.


Once in debug mode, the backoffice shows me following error:
I assume that the same error causes also a 'crash' in the frontend when a new user tries to register. Once all fields completed and clicking the SIgnup button, a browser screen pops up indicating However, refreshing does not solve the issue. Note: in these circumstances, NO new users can be found in the Joomla User DB. As such, also for the secretaries of my society, the front-end offers a work around.

I don't have a clue where to start in troubleshooting this issue. as we are approaching the new year and starting/refreshing new memberships, this became a kind of an issue.

System running:
PHP 7.2.2
Joomla 3.9.13
CB 2.4.2 build 2019.12.09
SB Subs 4.3.1 build 2019.11.20


I would appreciate any help! Many thanks in advance.

Hans Van Veer
www.rbss.be

In the backend, on creating a new user through CB>User Management> New User, once all CB fields have been completed and I hit the 'Save' or 'Save and Close' button, I see the following message :

Ensure debug mode and maximum error reporting are both enabled in Joomla global configuration then retry to see if a file and line number output with the error. Since those weren't provided I've no clue where that's coming from; there are a lot of check() calls throughout Joomla and CB as it's used to validate an object before storage. Could be caused by something installed. Recommend unpublishing non-core CB plugins in CB > Plugin Management 1 by 1 until issue goes away. If it doesn't redo this step with non-core Joomla user plugins in Extensions > Plugins.

Once in debug mode, the backoffice shows me following error:

Most be an old error log as that has long been fixed. Your line number doesn't line up with latest code either. Suggest downloading and reinstalling latest CB build to be sure your install properly updated.

I assume that the same error causes also a 'crash' in the frontend when a new user tries to register. Once all fields completed and clicking the SIgnup button, a browser screen pops up indicating

That's due to the spoof checking failing to find its access token. This doesn't use cookies anymore and is just directly using Joomla session so that error shouldn't happen unless the token expired from sitting on the page for an extended period of time without doing anything or your Joomla sessions aren't working correctly.

Thank you Krileon.

When enabling debug mode with maximal reporting, I end up with this screen in the adminstrator backend.

Hi Krileon,

Thanks to your tip, I managed to solve the issue.

I think I was already on the latest CB build.

For reference to others: It looked indeed that the third party plugin 'MultiViewCalCreator' caused the issue. After disabling this, creating users in backend as well as in frontend are working again.

Many thanks!