XML-RPC Error (404): XML-RPC doesn't support circular references Joomla

Hi,

From a few days we are getting few 502 bad gateway errors and performance issues with Moodle.

After investigation, our Moodle hosts are saying there are too many Joomdle web service requests "User password updated" events recorded in Moodle logs. Joomdle User created in Moodle is updating the users password according to Moodle Logs.

We have recently upgraded to Joomla 3.9.8 (hosted inhouse) and Joomdle 1.2.4.

Moodle (hosted externally) upgraded to Moodle 3.6.2.

Joomdle version in Moodle is 1.1.3.

Joomdle System check in Joomla is all good apart from different versions used.

Users can login and do their things as usual.

However we are getting intermittent connections at times.

We have got "Use redirectless SSO" enabled, "Use redirectless SSO logout" disabled, "Auto creation/deletion of Moodle users" enabled, Connection method is CURL.

Could anyone tell me which Joomdle function is triggering the "User password updated" event.

Any suggestions or help is appreciated.

Regards,
Sandeep Kankatala

Hi.

First thing you should do is upgrade Joomdle on Moodle to match version installed in Joomla, or at least install latest available version for your Moodle version. Ideally you would use the same one in Joomla.

Please share a screenshot of a log of entry, so I can try to understand what it is about.

Hi Antonio,

Thanks for the reply.

We have downgraded Joomdle version in Joomla to match with Joomdle in our Moodle.

Version mismatch now disappeared. Joomla System check is all green now.

We are getting below error started appearing before and after the Joomdle downgrade:

XML-RPC Error (404): XML-RPC doesn't support circular references

Any suggestions on how to resolve this.

Regards,
Sandeep

I have never seen that message before.
Googling a bit it seems it may be related to PHP version:
github.com/DarkaOnLine/Ripcord/issues/14

i have exact similar error and use
opcache_reset in some php file in joomdle and it is work for me and problem resolved.