I got a warning message in the log file as following:
Code:
 PHP Warning:  trim() expects parameter 1 to be string, array given in H:\onlinestore\includes\functions\functions_general.php on line 63

 PHP Stack trace:

   1. {main}() H:\onlinestore\index.php:0

   2. require() H:\onlinestore\index.php:97

   3. require() H:\onlinestore\includes\templates\CPE02\common\tpl_main_page.php:74

   4. require() H:\onlinestore\includes\templates\CPE02\common\tpl_header.php:58

   5. zen_draw_hidden_field() H:\onlinestore\includes\templates\CPE02\templates\tpl_header_currencies.php:20

   6. zen_output_string() H:\onlinestore\includes\functions\html_output.php:469

   7. zen_parse_input_field_data() H:\onlinestore\includes\functions\functions_general.php:77

   8. trim() H:\onlinestore\includes\functions\functions_general.php:63
I set 5 attributes as 5 filters. On the categories pages, the warning message repeated 5 times. On new products, all products and featured products, there is a extra filler - Categories, the message repeated 6 times.

Is anyone can help?, or suggestion?