Fatal error: Uncaught Error: Call to undefined function plugin_dir_path() in /opt/app-root/src/wp-content/plugins/favicon-by-realfavicongenerator/admin/class-favicon-by-realfavicongenerator-admin.php:4 Stack trace: #0 {main} thrown in /opt/app-root/src/wp-content/plugins/favicon-by-realfavicongenerator/admin/class-favicon-by-realfavicongenerator-admin.php on line 4