Error message when activating filters

Hi all,
I get an error message on the frontent when I activate two different filters. One is for products' properties (colours) and the other is for material. In the articles properties I have defined the colours and the materials in order to be able to use filters.

>> The error message I get is this:
Warning: implode() [function.implode]: Invalid arguments passed in ../administrator/components/com_hikashop/classes/filter.php on line 981

After activating the filters, only the titles of the filters can be seen on the frontend, but nothing else...

Could anyone tell me what that means?

Hi,

Have you the latest version of HikaShop ?

Can you give us the screenshot of your filters configuration ?
And the corresponding lines where the error is ?

Hi Xavier,

1)my HikaShop Business version is 2.1.2

2)Screenshot No.1:

if($filter->filter_data=='category'){

				if(!($infoGet[0]==$filter->filter_namekey && count($infoGet)==1)){

					$categoriesList='';

					foreach($infoGet as $cat){

						if($cat!=$filter->filter_namekey){

							$categoriesList.=(int)$cat.',';

						}

					}

					$categoriesList=substr($categoriesList,0,-1);



					$table = 'a';

					if(preg_match('#hikashop_product AS ([a-z0-9_]+)#i',$a,$matches)){

						$table = $matches[1];

					}

					$on.=' INNER JOIN '.hikashop_table('product_category').' AS '.$filter->filter_namekey.$i.' ON '.$filter->filter_namekey.$i.'.product_id='.$table.'.product_id AND '.$filter->filter_namekey.$i.'.category_id IN ('.$categoriesList.')';

				}

			}