Yoast SEO triggered a fatal error

I was debugging my previous problem that doesn’t show the gallery in media grid.Deactivating and reactivating YOAST SEO it appears this error.

The plugin could not be activated because it triggered a fatal error.

Fatal error: Uncaught Exception: unknown engine in /home/thegrkle/public_html/wp-content/plugins/w3-total-cache/Cdnfsd_Core.php:48
Stack trace: #0 /home/thegrkle/public_html/wp-content/plugins/w3-total-cache/Cdnfsd_CacheFlush.php(199): W3TC\Cdnfsd_Core->get_engine()
#1 /home/thegrkle/public_html/wp-includes/class-wp-hook.php(286): W3TC\Cdnfsd_CacheFlush::w3tc_flush_execute_delayed_operations(Array)
#2 /home/thegrkle/public_html/wp-includes/plugin.php(203): WP_Hook->apply_filters(Array, Array)
#3 /home/thegrkle/public_html/wp-content/plugins/w3-total-cache/CacheFlush_Locally.php(253): apply_filters('w3tc_flush_exec...', Array)
#4 /home/thegrkle/public_html/wp-content/plugins/w3-total-cache/CacheFlush.php(188): W3TC\CacheFlush_Locally->execute_delayed_operations()
#5 /home/thegrkle/public_html/wp-includes/class-wp-hook.php(284): W3TC\CacheFlush->execute_delayed_operations()
#6 /home/thegrkle/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(Object(WP_Error), Array)#7 /home/thegrkle/public_html/wp-incl in /home/thegrkle/public_html/wp-content/plugins/w3-total-cache/Cdnfsd_Core.php on line 48

Despite the error, the plugin activates and works correctly.

It seems to be cache error on W3TC but I can’t figure out how to fix

• This topic was modified 7 years, 2 months ago by nicocaldo.