Видео ютуба по тегу Trying To Get Property Of Non-Object Works On One Part Of Page But Not On Other

Resolving Trying to Get Property of Non-Object Error in PHP MySQL
Resolving Trying to Get Property of Non-Object Error in PHP MySQL
Resolving the Trying to get property 'page' of non-object Error in Laravel Sessions
Resolving the Trying to get property 'page' of non-object Error in Laravel Sessions