PHP notice when logging changes to menu items if ACF fields attached

[anugupta]

PHP Notice: Trying to access array offset on value of type null in <wp-root>/wp-content/plugins/simple-history/loggers/Plugin_ACF.php on line 272

I guess the issue is that it's not a post that's being saved, but I was able to remove the notice by changing from:
if ($post_id === $post_logger->lastInsertContext['post_id']) {

to:

if ( isset($post_logger->lastInsertContext['post_id']) && $post_id === $post_logger->lastInsertContext['post_id']) {

I didn't really investigate further, so unsure if this is the best way to fix, but perhaps this will help someone.