PHP Warning: mysqli::stat(): Couldn't fetch mysqli

[juanm_la22]

Hi guys, before start i must to say that im not sure if this is a bug or something wrong on my production server's configuration, but i am trying to figure it out.

The thing is that i am getting this warnings all the time on my php's error log:

[Wed Mar 22 13:31:35.159883 2017] [:error] [pid 10447] [client 163.172.65.66:27900] PHP Warning: mysqli::stat(): Couldn't fetch mysqli in /home/www/todoboda.com/libraries/joomla/database/driver/mysqli.php on line 219
[Wed Mar 22 13:31:35.159913 2017] [:error] [pid 10447] [client 163.172.65.66:27900] PHP Warning: mysqli_close(): Couldn't fetch mysqli in /home/www/todoboda.com/libraries/joomla/database/driver/mysqli.php on line 226

Always appears on that pair from line 219 and 226, and always on that order. Most of the time appears when something from Jomsocial is executed , but not always.

What i am not sure is why this is appearing on logs. The most noisy thing is that this not happen on my testing server (a vm with same OS (debian jessie) and same php and mysql versions).

Something that is freaking out me is Jomsocial. Sorry to the fans, but i think that jomsocial's developers did a lot of bad things... like their own cache if system's cache is enable. I have a lot of problems with that.

Well i hope someone can throw some light on this.

Thanks in advance and as always, sorry for my poor english.
Juan Manuel

[juanm_la22]

Nobody?

Please!

Regards!

[xiphias]

A month later and still no answer. Nice. Still have the same problem. Still no fix.

[stathopkostas]

Same problem with all of my Joomla+k2 sites when session handler is set to php (when is set to database all warnings stops)
viewtopic.php?f=706&t=950809

[jcstauring]

The solution is here simply delete the file noted on the link:
https://issues.joomla.org/tracker/joomla-cms/9511

[javicuse]

Hi there, I also have the problem with these errors on 2 of my production websites, both hosted on A2 Hosting, one on Apache and the other one on Turbo hosting.

It is also always the same set of 2 errors, and on the same lines. Change in the way sessions are handled is not doing anything, nor is the change in length of a session.
Deletion of one, or all mysql update files in admin section also don't change anything.