Fatal error after while uploading an image

Hello,

i get an error, when i want to upload a image via the media manager.

the error log said:

[Sat Jan 16 15:22:46 2016] [warn] [client 77.22.163.247] mod_fcgid: stderr: PHP Warning: require_once( ****/wp-content/plugins/w3-total-cache/lib/W3/Cdn/Mirror/Netdna.php): failed to open stream: No such file or directory in ****/wp-content/plugins/w3-total-cache/inc/define.php on line 1478, referer: ****/wp-admin/media-new.php
[Sat Jan 16 15:22:46 2016] [warn] [client 77.22.163.247] mod_fcgid: stderr: PHP Fatal error: require_once(): Failed opening required ‘ ****/wp-content/plugins/w3-total-cache/lib/W3/Cdn/Mirror/Netdna.php’ (include_path=’.:/package/host/localhost/php-5.6.16/lib/php’) in ****/wp-content/plugins/w3-total-cache/inc/define.php on line 1478, referer: ****/wp-admin/media-new.php

i installed the plugin “W3 total cache”. When i deactivate your or the cache plugin it works. i think this is a undesirable interplay.

But what can i do?

I’m using the latest version of both plugins.

With best regards, Benni

https://wordpress.org/plugins/ewww-image-optimizer/