W3 Total Cache Plugin Fatal Error Issue Get Fixed
If you are using W3 Total Cache Plugin on your WordPress blog then possibilities are there for you to come across this Fatal error like uncaught ‘Exception’ with message ‘unknown engine’.
Don’t scratch your head about how to get this sorted out. We will share the solution here to get rid of this error.
W3 Total Cache Plugin Fatal Error :
For newbies who do not know the benefit of this plugin, I will share some information here.
W3 Total Cache Plugin helps to increase overall site performance 10 times more than the current status. Some more features of W3 Total Cache plugin are as follows. it helps to
- improve SEO
- increase website performance
- reduce download times utilizing Content Delivery Network(CDN) feature.
- Plugin features applicable to Accelerated Mobile Pages (AMP) as well.
- Browser Caching can be done using cache control feature.
If you not yet started using the W3 Total Cache plugin to improve your website SEO to get more website traffic then i recommend you to use it and get benefit.
While working with the W3 Total Cache plugin or when trying to perform any activity like publishing blog posts or updating something from WordPress admin dashboard, it will land up in below error.
Fatal error: Uncaught exception ‘Exception’ with message ‘unknown engine ‘ in /home1/sjrsbe/public_html/shouttips.com/wp-content/plugins/w3-total-cache/Cdnfsd_Core.php:48 Stack trace: #0 /home1/sjrsbe/public_html/shouttips.com/wp-content/plugins/w3-total-cache/Cdnfsd_CacheFlush.php(222): W3TC\Cdnfsd_Core->get_engine() #1 [internal function]: W3TC\Cdnfsd_CacheFlush::w3tc_flush_execute_delayed_operations(Array) #2 /home1/sjrsbe/public_html/shouttips.com/wp-includes/class-wp-hook.php(286): call_user_func_array(Array, Array) #3 /home1/sjrsbe/public_html/shouttips.com/wp-includes/plugin.php(203): WP_Hook->apply_filters(Array, Array) #4 /home1/sjrsbe/public_html/shouttips.com/wp-content/plugins/w3-total-cache/CacheFlush_Locally.php(253): apply_filters(‘w3tc_flush_exec…’, Array) #5 /home1/sjrsbe/public_html/shouttips.com/wp-content/plugins/w3-total-cache/CacheFlush.php(188): W3TC\CacheFlush_Locally->execute_delayed_operations() #6 /home1/sjrsbe/public_html/shouttips.com/wp-content/plugins/w3-total-cache/CacheFlush.php(194): W3 in /home1/sjrsbe/public_html/shouttips.com/wp-content/plugins/w3-total-cache/Cdnfsd_Core.php on line 48
Solution To Fix W3 Total Cache Plugin Fatal Error:
Solution 1:
Uninstall and reinstall the W3 Total Cache Plugin and see if that fixes the issue.
Solution 2:
SSH in to the webserver where your website or blog is hosted.
Navigate to the wp-contents folder. Search for below information in master.php file.
“cdnfsd.enabled”: “1”,
“cdnfsd.engine”: “”,
“cdnfsd.debug”: false,
By default, cdnfsd.enabled = 1 . Change it to zero ‘0’
Once you get it changed, it should be like this.
“cdnfsd.enabled”: “0”,
“cdnfsd.engine”: “”,
“cdnfsd.debug”: false,
Save the file and now test it.
Do the same operation which was forcing you to land in this error earlier. You won’t be getting same error anymore as the applied fix should be working as expected.
Conclusion:
Hope you learned how to fix this fatal error uncaught ‘Exception’ with message ‘unknown engine’ arising when using W3 Total Cache Plugin.
Is the solution helped you to fix the error or still you need any help?
Feel free to share your comments or thoughts using comment option.
Will meet you in another post.