I found another null issue in class-product-addon-display on line 390 and resolved it the same way.
added
if ( ! is_a( $product, ‘WC_Product’ ) ) {
return;
}
before
if ( ! is_single( $product->get_id() ) ) {
if ( $this->check_required_addons( $product->get_id() ) ) {
You have this topic showing as resolved?
However I’ve the latest version of the “Log Viewer” plugin installed and I have to disable it to get rid of the same message as originally given except the line number has increased by 1?
Notice: The called constructor method for Debug_Bar_Panel::Debug_Bar_Panel in Debug_Bar_Panel is deprecated since version 0.8.3! Use __construct() instead. in (functions.php on line 3894)