Fatal error: Uncaught Error: Call to undefined function plugin_dir_path() in /home/czccb7jdgqc5/public_html/wp-content/plugins/oiopub-direct/index.php:34
Stack trace:
#0 /home/czccb7jdgqc5/public_html/wp-content/plugins/oiopub-direct/modules/tracker/go.php(21): include_once()
#1 {main}
thrown in /home/czccb7jdgqc5/public_html/wp-content/plugins/oiopub-direct/index.php on line 34