Istoria paginii utilizator/test

Fatal error: Uncaught TypeError: format_user_tiny(): Argument #1 ($username) must be of type string, null given, called in /home/nerdarena/public_html/infoarena/www/views/textblock_history.php on line 87 and defined in /home/nerdarena/public_html/infoarena/www/format/format.php:123 Stack trace: #0 /home/nerdarena/public_html/infoarena/www/views/textblock_history.php(87): format_user_tiny() #1 /home/nerdarena/public_html/infoarena/www/format/table.php(131): {closure}() #2 /home/nerdarena/public_html/infoarena/www/views/textblock_history.php(143): format_table() #3 /home/nerdarena/public_html/infoarena/www/utilities.php(202): include('...') #4 /home/nerdarena/public_html/infoarena/www/utilities.php(207): execute_view() #5 /home/nerdarena/public_html/infoarena/www/controllers/textblock.php(189): execute_view_die() #6 /home/nerdarena/public_html/infoarena/www/index.php(207): controller_textblock_history() #7 {main} thrown in /home/nerdarena/public_html/infoarena/www/format/format.php on line 123