ERROR on Activation of Plugin

<b>Fatal error</b>: Uncaught Error: Class 'Puc_v4p4_Plugin_UpdateChecker' not found in /var/www/html/example.com/wp-content/plugins/rss-feed-post-generator-echo/update-checker/Puc/v4p4/Factory.php:86 Stack trace: #0 /var/www/html/example.com/wp-content/plugins/rss-feed-post-generator-echo/rss-feed-post-generator-echo.php(144): Puc_v4p4_Factory::buildUpdateChecker('https://coderev...', '/var/www/html/e...', 'rss-feed-post-g...') #1 /var/www/html/example.com/wp-admin/includes/plugin.php(2141): include('/var/www/html/e...') #2 /var/www/html/example.com/wp-admin/plugins.php(175): plugin_sandbox_scrape('rss-feed-post-g...') #3 {main} thrown in <b>/var/www/html/example.com/wp-content/plugins/rss-feed-post-generator-echo/update-checker/Puc/v4p4/Factory.php</b> on line <b>86</b>     Getting this error. Need immediate support please.