Сообщение об ошибке

• Notice: Only variables should be passed by reference in pivot_preprocess_node() (line 99 of themes/pivot/pivot.theme).
• Notice: Only variables should be passed by reference in pivot_preprocess_node() (line 100 of themes/pivot/pivot.theme).
• Notice: Only variables should be passed by reference in pivot_preprocess_node() (line 101 of themes/pivot/pivot.theme).