Misleading "You do not have sufficient permissions to access this page."

[hakre]

When accessing a page of a plugin in the admin that does not exists any longer, you're told by an error message, that:

You do not have sufficient permissions to access this page.

This message is a little misleading, because there is no such page.

A message that better reflects the decision to display it would be less misleading, e.g.:

The requested page is not accessible.

Simple Patch

FYI: at the end of Plugin.php there are a lot of functions undocumented and in addition to that important global variables for the admin like $parent_file or $plugin_page are not documented as well.

Related, #14039

Better description

Both of those proposed wordings are not appropriate IMO.

The major case of that block is to prevent users accessing pages which they do not have access to, The current wording seems appropriate for that (A straight up, Permission denied message).

"The requested page is not accessible." - Doesn't convey the reason for the page being inaccessible.

An alternate solution could be such as follows to give non-existant pages a specific error:

if ( !admin_page_exists() ) {
 do_action...
 wp_die "non-existant page!"
} elseif ( !user_can_access_admin_page() ) {
 do_action...
 wp_die "You dont have access!...";
}

I'm with dd32.

For my scenario to check whether or not a page exists, would haven been helpful already.

Related: #15394

Related: #18218

14060.2.patch​ implements dd32's suggestion.

Closed #18662 as a duplicate.

"The requested page no longer exists."