Issues with Quick2cart 2.9.7

Hi,

I have got the latest Quick2Cart v2.9.7 and I use it with Jreviews latest version.

I have got these errors and it seems to provide from your component because all of those PHP notices are coming directly from the Quick2cart component core files:

Notice: Trying to get property of non-object in ~/public_html/components/com_tjfields/helpers/tjfields.php on line 174

Notice: Trying to get property of non-object in ~/public_html/components/com_tjfields/helpers/tjfields.php on line 177

Notice: Undefined property: Quick2cartController::$lengthClasses in ~/public_html/components/com_quick2cart/views/product/tmpl/taxship.php on line 75

Warning: Invalid argument supplied for foreach() in ~/public_html/libraries/cms/html/select.php on line 589

Notice: Undefined property: Quick2cartController::$weightClasses in ~/public_html/components/com_quick2cart/views/product/tmpl/taxship.php on line 111
Warning: Invalid argument supplied for foreach() in ~/public_html/libraries/cms/html/select.php on line 589

Could you please fix it because, I can't save when I am setting a product?