Edit file File name : uninstall.php Content :<?php /** * The 404page Plugin Uninstall */ if ( ! defined( 'ABSPATH' ) ) { exit; // Exit if accessed directly } // If this is somehow accessed withou plugin uninstall is requested, abort if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) || ! WP_UNINSTALL_PLUGIN || dirname( WP_UNINSTALL_PLUGIN ) != dirname( plugin_basename( __FILE__ ) ) ) { die; } /** * Loader */ require_once( plugin_dir_path( __FILE__ ) . '/loader.php' ); /** * Run Uninstaller */ pp_404page()->uninstall();Save