Fatal error: Uncaught Error: Call to undefined function is_plugin_active() in /home/ahnigeria/public_html/wp-content/plugins/simple-job-board/admin/class-simple-job-board-admin-shortcode-generator.php:33 Stack trace: #0 /home/ahnigeria/public_html/wp-content/plugins/simple-job-board/admin/class-simple-job-board-admin-shortcode-generator.php(107): Simple_Job_Board_Admin_Shortcodes_Generator->__construct() #1 /home/ahnigeria/public_html/wp-content/plugins/simple-job-board/admin/class-simple-job-board-admin.php(75): require_once('/home/ahnigeria...') #2 /home/ahnigeria/public_html/wp-content/plugins/simple-job-board/includes/class-simple-job-board.php(138): Simple_Job_Board_Admin->__construct('simple-job-boar...', '2.12.3') #3 /home/ahnigeria/public_html/wp-content/plugins/simple-job-board/includes/class-simple-job-board.php(63): Simple_Job_Board->define_admin_hooks() #4 /home/ahnigeria/public_html/wp-content/plugins/simple-job-board/simple-job-board.php(127): Simple_Job_Board->__construct() #5 /home/ahnigeria/public_html/wp-content/plugins/simple-job-board/simple-job-board.php(131): run_simple_job_board() #6 /home/ahnigeria/public_html/wp-settings.php(522): include_once('/home/ahnigeria...') #7 /home/ahnigeria/public_html/wp-config.php(174): require_once('/home/ahnigeria...') #8 /home/ahnigeria/public_html/wp-load.php(50): require_once('/home/ahnigeria...') #9 /home/ahnigeria/public_html/wp-blog-header.php(13): require_once('/home/ahnigeria...') #10 /home/ahnigeria/public_html/index.php(17): require('/home/ahnigeria...') #11 {main} thrown in /home/ahnigeria/public_html/wp-content/plugins/simple-job-board/admin/class-simple-job-board-admin-shortcode-generator.php on line 33