nginx配置文件需要增加

client_max_body_size 1G;

php.ini修改

max_execution_time = 3600
max_input_time = 3600
upload_max_filesize = 1G
post_max_size = 1G

修改主题文件

        		<div class="site-info">
        			<span class="mt-copyright-text">
						© <?php echo get_the_date('Y'); ?> 王承志 
						<span class="sep"> | </span>
						<a href="https://beian.miit.gov.cn">
        				<?php 
        					$wp_diary_footer_copyright = get_theme_mod( 'wp_diary_footer_copyright', __( 'WP Diary', 'wp-diary' ) );
        					echo esc_html( $wp_diary_footer_copyright );
        				?>
						</a>
        			</span>
        			<!--span class="sep"> | </span-->
        				<!--?php
                        $designer_url = 'https://mysterythemes.com';
        				/* translators: 1: Theme name, 2: Theme author. */
        				printf( esc_html__( 'Theme: %1$s by %2$s.', 'wp-diary' ), 'wp-diary', '<a href="'. esc_url( $designer_url ) .'" rel="designer">Mystery Themes</a>' );
        				?-->