PHP 7.1 Problem

Good day!

Have some errors with PHP 7.1. As result – plug-in is’nt show list of files.

2017/12/19 01:01:07 [error] 3724#3724: *8555 FastCGI sent in stderr: “ilesize() /var/www/batteryservice/data/www/batteryservice.ru/wp-content/plugins/wp-downloadmanager/wp-downloadmanager.php:1064
PHP message: PHP Warning: A non-numeric value encountered in /var/www/batteryservice/data/www/batteryservice.ru/wp-content/plugins/wp-downloadmanager/wp-downloadmanager.php on line 302
PHP message: PHP Stack trace:
PHP message: PHP 1. {main}() /var/www/batteryservice/data/www/batteryservice.ru/index.php:0
PHP message: PHP 2. require() /var/www/batteryservice/data/www/batteryservice.ru/index.php:17
PHP message: PHP 3. require_once() /var/www/batteryservice/data/www/batteryservice.ru/wp-blog-header.php:19
PHP message: PHP 4. include() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/template-loader.php:74
PHP message: PHP 5. the_content() /var/www/batteryservice/data/www/batteryservice.ru/wp-content/themes/bs_theme/single-support.php:34
PHP message: PHP 6. apply_filters() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/post-template.php:240
PHP message: PHP 7. WP_Hook->apply_filters() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/plugin.php:203
PHP message: PHP 8. do_shortcode() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/class-wp-hook.php:286
PHP message: PHP 9. preg_replace_callback() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/shortcodes.php:197
PHP message: PHP 10. do_shortcode_tag() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/shortcodes.php:197
PHP message: PHP 11. download_shortcode() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/shortcodes.php:319
PHP message: PHP 12. download_embedded() /var/www/batteryservice/data/www/batteryservice.ru/wp-content/plugins/wp-downloadmanager/wp-downloadmanager.php:473
PHP message: PHP 13. format_filesize() /var/www/batteryservice/data/www/batteryservice.ru/wp-content/plugins/wp-downloadmanager/wp-downloadmanager.php:1064
PHP message: PHP Wa
2017/12/19 01:01:07 [error] 3724#3724: *8555 FastCGI sent in stderr: “nt/themes/bs_theme/single-support.php:34
PHP message: PHP 6. apply_filters() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/post-template.php:240
PHP message: PHP 7. WP_Hook->apply_filters() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/plugin.php:203
PHP message: PHP 8. do_shortcode() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/class-wp-hook.php:286
PHP message: PHP 9. preg_replace_callback() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/shortcodes.php:197
PHP message: PHP 10. do_shortcode_tag() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/shortcodes.php:197
PHP message: PHP 11. download_shortcode() /var/www/batteryservice/data/www/batteryservice.ru/wp-includes/shortcodes.php:319
PHP message: PHP 12. download_embedded() /var/www/batteryservice/data/www/batteryservice.ru/wp-content/plugins/wp-downloadmanager/wp-downloadmanager.php:473
PHP message: PHP 13. format_filesize_dec() /var/www/batteryservice/data/www/batteryservice.ru/wp-content/plugins/wp-downloadmanager/wp-downloadmanager.php:1065
PHP message: PHP Warning: A non-numeric value encountered in /var/www/batteryservice/data/www/batteryservice.ru/wp-content/plugins/wp-downloadmanager/wp-downloadmanager.php on line 323

The page I need help with: [log in to see the link]