I am currently using the sydney theme and
I am trying to use this plug-in called "Page Specific Menu Items"
but the problem with this is when I go to page and
try to hide items from menu from the plugin it has a message of
"Current Menu: Menu items not defined. Please add one."
is there a way to fix this?
We are not in position to provide support regarding 3rd party plugins. please consult their documentation or contact their support https://wordpress.org/support/plugin/page-specific-menu-items