Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method RRatingGetCode::add_filter() cannot be called statically in /var/www/u0075752/data/www/i44.ru/wp-includes/class-wp-hook.php:324
Stack trace:
#0 /var/www/u0075752/data/www/i44.ru/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array)
#1 /var/www/u0075752/data/www/i44.ru/wp-includes/class-wp.php(311): apply_filters('query_vars', Array)
#2 /var/www/u0075752/data/www/i44.ru/wp-includes/class-wp.php(813): WP->parse_request('')
#3 /var/www/u0075752/data/www/i44.ru/wp-includes/functions.php(1336): WP->main('')
#4 /var/www/u0075752/data/www/i44.ru/wp-blog-header.php(16): wp()
#5 /var/www/u0075752/data/www/i44.ru/index.php(17): require('/var/www/u00757...')
#6 {main}
thrown in /var/www/u0075752/data/www/i44.ru/wp-includes/class-wp-hook.php on line 324