I just get a blank screen at my website: http://www.circleoffilm.com
Here are my error logs:
/home3/circlfa4/public_html/error_log:
[09-May-2017 15:17:11 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:17:11 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:17:11 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 15:18:06 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:18:06 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:18:06 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 15:18:08 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:18:08 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:18:08 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 15:19:31 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:19:31 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:19:31 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 15:19:33 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:19:33 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:19:33 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 15:20:30 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:20:30 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:20:30 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 15:20:34 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:20:34 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:20:34 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 15:25:24 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:25:24 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:25:24 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 15:26:20 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:26:20 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:26:20 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 15:26:38 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:26:38 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 15:26:38 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270

/home3/circlfa4/public_html/wp-content/plugins-old/error_log:
[27-Feb-2017 09:09:28 America/Denver] PHP Fatal error: Call to undefined function add_action() in /home3/circlfa4/public_html/wp-content/plugins/hello.php on line 60

/home3/circlfa4/public_html/wp-content/themes/twentyfifteen-old/error_log:
[03-Mar-2017 16:46:59 America/Denver] PHP Fatal error: Call to undefined function get_header() in /home3/circlfa4/public_html/wp-content/themes/twentyfifteen/404.php on line 10
[03-Mar-2017 21:35:36 America/Denver] PHP Notice: Undefined index: wp_version in /home3/circlfa4/public_html/wp-content/themes/twentyfifteen/functions.php on line 40
[03-Mar-2017 21:35:36 America/Denver] PHP Fatal error: Call to undefined function get_template_directory() in /home3/circlfa4/public_html/wp-content/themes/twentyfifteen/functions.php on line 41
[16-Apr-2017 14:53:33 America/Denver] PHP Notice: Undefined index: wp_version in /home3/circlfa4/public_html/wp-content/themes/twentyfifteen/functions.php on line 40
[16-Apr-2017 14:53:33 America/Denver] PHP Fatal error: Call to undefined function get_template_directory() in /home3/circlfa4/public_html/wp-content/themes/twentyfifteen/functions.php on line 41
[16-Apr-2017 23:16:59 America/Denver] PHP Fatal error: Call to undefined function get_header() in /home3/circlfa4/public_html/wp-content/themes/twentyfifteen/404.php on line 10

/home3/circlfa4/public_html/wp-content/themes/twentyfourteen-old/error_log:
[04-Mar-2017 02:52:30 America/Denver] PHP Fatal error: Call to undefined function get_header() in /home3/circlfa4/public_html/wp-content/themes/twentyfourteen/404.php on line 10
[17-Apr-2017 01:40:53 America/Denver] PHP Fatal error: Call to undefined function get_header() in /home3/circlfa4/public_html/wp-content/themes/twentyfourteen/404.php on line 10

/home3/circlfa4/public_html/wp-admin/error_log:
[01-May-2017 06:37:51 UTC] WordPress database error Got error 28 from storage engine for query SHOW FULL COLUMNS FROM wp_qlvv_options made by require_once(‘wp-load.php’), require_once(‘wp-config.php’), require_once(‘wp-settings.php’), do_action(‘init’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_cron, spawn_cron, set_transient, update_option
[01-May-2017 06:37:51 UTC] WordPress database error Got error 28 from storage engine for query SHOW FULL COLUMNS FROM wp_qlvv_postmeta made by do_action(‘wp_ajax_heartbeat’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_ajax_heartbeat, apply_filters(‘heartbeat_received’), WP_Hook->apply_filters, call_user_func_array, wp_refresh_post_lock, wp_set_post_lock, update_post_meta, update_metadata
[01-May-2017 06:38:06 UTC] WordPress database error Got error 28 from storage engine for query SHOW FULL COLUMNS FROM wp_qlvv_options made by require_once(‘wp-load.php’), require_once(‘wp-config.php’), require_once(‘wp-settings.php’), do_action(‘init’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_cron, spawn_cron, set_transient, update_option
[01-May-2017 06:38:07 UTC] WordPress database error Got error 28 from storage engine for query SHOW FULL COLUMNS FROM wp_qlvv_postmeta made by do_action(‘wp_ajax_heartbeat’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_ajax_heartbeat, apply_filters(‘heartbeat_received’), WP_Hook->apply_filters, call_user_func_array, wp_refresh_post_lock, wp_set_post_lock, update_post_meta, update_metadata
[01-May-2017 06:38:21 UTC] WordPress database error Got error 28 from storage engine for query SHOW FULL COLUMNS FROM wp_qlvv_options made by require_once(‘wp-load.php’), require_once(‘wp-config.php’), require_once(‘wp-settings.php’), do_action(‘init’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_cron, spawn_cron, set_transient, update_option
[01-May-2017 06:38:22 UTC] WordPress database error Got error 28 from storage engine for query SHOW FULL COLUMNS FROM wp_qlvv_postmeta made by do_action(‘wp_ajax_heartbeat’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_ajax_heartbeat, apply_filters(‘heartbeat_received’), WP_Hook->apply_filters, call_user_func_array, wp_refresh_post_lock, wp_set_post_lock, update_post_meta, update_metadata
[01-May-2017 06:38:36 UTC] WordPress database error Got error 28 from storage engine for query SHOW FULL COLUMNS FROM wp_qlvv_options made by require_once(‘wp-load.php’), require_once(‘wp-config.php’), require_once(‘wp-settings.php’), do_action(‘init’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_cron, spawn_cron, set_transient, update_option
[01-May-2017 06:38:36 UTC] WordPress database error Got error 28 from storage engine for query SHOW FULL COLUMNS FROM wp_qlvv_postmeta made by do_action(‘wp_ajax_heartbeat’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_ajax_heartbeat, apply_filters(‘heartbeat_received’), WP_Hook->apply_filters, call_user_func_array, wp_refresh_post_lock, wp_set_post_lock, update_post_meta, update_metadata
[01-May-2017 06:38:51 UTC] WordPress database error Got error 28 from storage engine for query SHOW FULL COLUMNS FROM wp_qlvv_options made by require_once(‘wp-load.php’), require_once(‘wp-config.php’), require_once(‘wp-settings.php’), do_action(‘init’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_cron, spawn_cron, set_transient, update_option
[01-May-2017 06:38:52 UTC] WordPress database error Got error 28 from storage engine for query SHOW FULL COLUMNS FROM wp_qlvv_postmeta made by do_action(‘wp_ajax_heartbeat’), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, wp_ajax_heartbeat, apply_filters(‘heartbeat_received’), WP_Hook->apply_filters, call_user_func_array, wp_refresh_post_lock, wp_set_post_lock, update_post_meta, update_metadata
[03-May-2017 13:54:36 UTC] PHP Warning: Invalid argument supplied for foreach() in /home3/circlfa4/public_html/wp-content/themes/mantra/includes/theme-styles.php on line 21
[03-May-2017 13:54:37 UTC] PHP Warning: Invalid argument supplied for foreach() in /home3/circlfa4/public_html/wp-content/themes/mantra/includes/theme-styles.php on line 21
[03-May-2017 13:54:38 UTC] PHP Warning: Invalid argument supplied for foreach() in /home3/circlfa4/public_html/wp-content/themes/mantra/includes/theme-styles.php on line 21
[03-May-2017 13:54:40 UTC] PHP Warning: Invalid argument supplied for foreach() in /home3/circlfa4/public_html/wp-content/themes/mantra/includes/theme-styles.php on line 21
[03-May-2017 13:54:41 UTC] PHP Warning: Invalid argument supplied for foreach() in /home3/circlfa4/public_html/wp-content/themes/mantra/includes/theme-styles.php on line 21
[09-May-2017 02:31:48 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 02:31:48 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 02:31:48 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 02:41:16 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 02:41:16 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 02:41:16 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 02:41:44 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 02:41:44 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 02:41:44 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 02:41:46 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 02:41:46 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 02:41:46 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270
[09-May-2017 02:42:13 UTC] PHP Warning: require_once(includes/class-podmotor-handler.php): failed to open stream: No such file or directory in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 02:42:13 UTC] PHP Fatal error: require_once(): Failed opening required ‘includes/class-podmotor-handler.php’ (include_path=’.:/usr/php/56/usr/lib64:/usr/php/56/usr/share/pear’) in /home3/circlfa4/public_html/wp-content/plugins/seriously-simple-podcasting/seriously-simple-podcasting.php on line 38
[09-May-2017 02:42:13 UTC] PHP Fatal error: Call to undefined function is_user_logged_in() in /home3/circlfa4/public_html/wp-content/mu-plugins/endurance-page-cache.php on line 270

I’m not quite savvy enough to figure out what the precise problem is or what to do to fix it. Any help?