Title: Error when activating plugin Last modified: May 11, 2020 --- # Error when activating plugin * [canopytreehouses](https://wordpress.org/support/users/canopytreehouses/) * (@canopytreehouses) * [6 years ago](https://wordpress.org/support/topic/error-when-activating-plugin-39/) * I get the following error when trying to Activate the FB Pixel WP is latest version Plugin is up to date * Warning: include(C:\Inetpub\vhosts\canopytreehouses.com.au\httpdocs\wp-content\ plugins\official-facebook-pixel\vendor\composer/../techcrunch/wp-async-task/wp- async-task.php): failed to open stream: No such file or directory in C:\Inetpub\ vhosts\canopytreehouses.com.au\httpdocs\wp-content\plugins\official-facebook- pixel\vendor\composer\ClassLoader.php on line 444 * Warning: include(): Failed opening ‘C:\Inetpub\vhosts\canopytreehouses.com.au\ httpdocs\wp-content\plugins\official-facebook-pixel\vendor\composer/../techcrunch/ wp-async-task/wp-async-task.php’ for inclusion (include_path=’.;.\includes;.\ pear’) in C:\Inetpub\vhosts\canopytreehouses.com.au\httpdocs\wp-content\plugins\ official-facebook-pixel\vendor\composer\ClassLoader.php on line 444 * Fatal error: Class ‘WP_Async_Task’ not found in C:\Inetpub\vhosts\canopytreehouses. com.au\httpdocs\wp-content\plugins\official-facebook-pixel\core\ServerEventAsyncTask. php on line 24 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-when-activating-plugin-39%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 1 replies (of 1 total) * Thread Starter [canopytreehouses](https://wordpress.org/support/users/canopytreehouses/) * (@canopytreehouses) * [6 years ago](https://wordpress.org/support/topic/error-when-activating-plugin-39/#post-12817504) * When- i try and install the plugin directly from WordPress rater than the Downloaded ZIP file i get the following error. * Installation failed: 500 Internal Server Error html{overflow- y:scroll;color:#000;font:400 62.5%/1.4 “Helvetica Neue”,Helvetica,Arial,sans- serif;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%;-webkit-tap-highlight- color:transparent}body,html{height:100%;min-height:100%}body{margin:0;font-size: 1.3rem;background:#fff;color:#000}a{cursor:pointer;text-decoration:none;color:# 2498e3;background-color:transparent}a:active,a:hover{text-decoration:underline; color:#188dd9;outline:0}h1,h2{margin:0 0 .5rem;color:#444;font-weight:400;line- height:1}h1{font-size:2.4rem}h2{font-size:3.6rem}.error-code{color:#f47755;font- size:8rem;line-height:1}p{margin:1.2rem 0}p.lead{font-size:1.6rem;color:#4f5a64} hr{box-sizing:content-box;height:0;margin:2.4rem 0;border:0;border-top:1px solid# ddd}.page{display:-webkit-box;display:-ms-flexbox;display:flex;min-height:100vh}. page:before{display:block;content:”;-webkit-box-flex:0;-ms-flex:0 1 474px;flex: 0 1 474px;background:#38444f 50% 6em no-repeat;background-image:url(data:image/ 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page{-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction: column;flex-direction:column}.page:before{-ms-flex-preferred-size:250px;flex- basis:250px;background-position:5rem -4.8rem;background-size:166px auto}.main{ min-height:0;-webkit-box-flex:0;-ms-flex:none;flex:none}}@media(max-width:479px){ h2{font-size:3rem}.main{padding:3rem}} Server Error 500 Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. 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