Php Error If I change function.php

Hi,

If I try to save my function.php file, I have this error:

Uncaught Error: Call to undefined function menu_page_url() in wp-content/plugins/nmedia-user-file-uploader/wp-file-manager.php:141
Stack trace:
#0 wp-includes/class-wp-hook.php(305): WPFM->wpfm_change_add_new_link('https://www.dep...', 'post-new.php?po...')
#1 wp-includes/plugin.php(189): WP_Hook->apply_filters('https://www.dep...', Array)
#2 wp-includes/link-template.php(3446): apply_filters('admin_url', 'https://www.dep...', 'post-new.php?po...', NULL, 'admin')
#3 wp-includes/link-template.php(3412): get_admin_url(NULL, 'post-new.php?po...', 'admin')
#4 wp-includes/admin-bar.php(908): admin_url('post-new.php?po...')
#5 wp-includes/class-wp-hook.php(303): wp_admin_bar_new_content_menu(Object(WP_Admin_Bar))
#6 /web/htdocs/www.depacons

If I deactivate the your plugin, edit the function.php and save, I don’t have any error message.

I’va tried to deactivate all the plugins, but nothing change.

Can you help me?

Thanks,

Randall