Hi @apuliabikeroute
The path in the error message is for 3.4, but on your site I can see the 3.3 pathes used.
Have you downgraded to 3.3.?
I think your problem might have been that something went wrong during the 3.3 to 3.4 update, and some new files were not copied, or maybe some old files weren’t removed.
What I recommend trying is a manual update via FTP.
For that you’ll need to deactivate and remove the current Smart Slider 3 installation (your sliders will stay!). Then you should download the zip file from:
https://downloads.www.ads-software.com/plugin/smart-slider-3.3.4.1.7.zip
Then unzip it and upload it to your server:
https://smartslider.helpscoutdocs.com/article/1717-wordpress-installation#ftp
If you would use for example Filezilla, you could see whether or not all files are getting uploaded. And you could also try to upload those files again, which failed.
If every file was uploaded, but you still see the problem, maybe you have PHP caching. You can check that at the Help Center:
https://smartslider.helpscoutdocs.com/article/1773-help-center
under “Debug information”. Look for this line:
PHP - opcache.enable:
If it’s 1, then it’s enabled on your sever, and it refreshes with the interval set at:
PHP - opcache.revalidate_freq: 2
If you’re not sure where/how to clear this cache, you could create opcache_reset.php file. Put this code in it:
<?php
opcache_reset();
Then upload it to your server via FTP, then you should open this file in the browser. E.g. if you uploaded it into the installation folder of your WordPress ( the same directory where your wp-config.php folder is located ) then you will need to open it like this: https://yoursite.com/opcache_reset.php
where “yoursite.com” is your site URL. Then check if the problem still occurs like that.
