Hi,
I have update on Monday to 3.1 and I started to realise yesterday that intermittently I am getting the following error message ->
Warning: mysqli_num_fields() expects parameter 1 to be mysqli_result, boolean given in /home/nuolaida/public_html/bettingtips4you.com/wp-includes/wp-db.php on line 3021
Warning: mysqli_num_fields() expects parameter 1 to be mysqli_result, boolean given in /home/nuolaida/public_html/bettingtips4you.com/wp-includes/wp-db.php on line 3021
It tends to happen mostly on mobile when clearing cache although I have also seen in some instances on desktop.
Is this is a known issue with the theme? I am using W3 Cache and so far no problem with the theme in the last year. Can it be with the update it is now conflicting?
What do you suggest to do?
Thanks
Hi, do you have an update on this? We had to disable W3 Cache altough not sure as it was working fine before the upgrade. Do you know if some particular setting could be conflicting and causing this error message with the theme?
Thanks
Hi
This errors occurs when the query fails but we didn’t received a similar report so far. I am not sure why this happens or if the problem still exist on your site as I’ve check it and now it is displayed fine on both mobile and desktop devices: http://screencast.com/t/1SQIpJZpAtE – http://screencast.com/t/A1ZqpJ5PjJb
If the problem persit try to deactivate all plugins except Visual Composer, clear all caches then test again. As cache plugin we recommend WP Super Cache which is tested and works fine with the theme: https://forum.tagdiv.com/cache-plugin-install-and-configure/
Let us know how it goes.
Thanks!
Hi Andrei,
yes, I have tried to deactivate W3 Cache and the problem has gone away. So there seem to be a conflict with the theme and W3 Cache following upgrade to 3.1. We didn’t had issues before. We might try to go to WP Super Cache then if it is the one supported by yourself.
Cheers
Simone
