Undifined Index when refreshing IE after a required product

Hi,

I have noticed that in Internet Explorer, if you edit an existing product and save it without filling a required field, than after that a refresh is performed in the IE browser, the following error are showed. I wanted to know if this can be fixed?

Undefined index: product_description in C:\Apache24\htdocs\opencart202\admin\controller\catalog\product.php on line 1312Warning: Invalid argument supplied for foreach() in C:\Apache24\htdocs\opencart202\admin\controller\catalog\product.php on line 1312Notice: Undefined index: model in C:\Apache24\htdocs\opencart202\admin\controller\catalog\product.php on line 1322Notice: Undefined index: keyword in C:\Apache24\htdocs\opencart202\admin\controller\catalog\product.php on line 1326

Thanks