i can't activate this Another WordPress Classifieds Plugin (AWPCP) in wordpress , how i can fix it?

i can't activate this Another WordPress Classifieds Plugin (AWPCP) in wordpress i have this error appears when i tried to activate this plugin

Plugin could not be activated because it triggered a fatal error. PHP Error Message

Warning: require_once(/home/a9059209/public_html/wordpress/wp-content/plugins/another-wordpress-classifieds-plugin/includes/functions/categories.php) [function.require-once]: failed to open stream: No such file or directory in /home/a9059209/public_html/wordpress/wp-content/plugins/another-wordpress-classifieds-plugin/awpcp.php on line 77

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PHP Error Message

Fatal error: require_once() [function.require]: Failed opening required '/home/a******/public_html/wordpress/wp-content/plugins/another-wordpress-classifieds-plugin/includes/functions/categories.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/a******/public_html/wordpress/wp-content/plugins/another-wordpress-classifieds-plugin/awpcp.php on line 77

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how i can fix it?

via Chebli Mohamed