Readied error pages for variable themes.

Fixed error in parsing pseudocode.

apiMirror.php

@@ -13,12 +13,12 @@ require_once __DIR__ . "/inc/functions.php";
 // Check validity of request.
 
 if (!isset($_GET['args']) || !isset($_GET['area'])) {
-    echo printErrorPage("File does not exist.");
+    echo printErrorPage($settings, "File does not exist.");
     return;
 }
 
 if (!in_array($_GET['area'], ['events', 'exhibitions'])) {
-    echo printErrorPage("Using a disallowed value for area.");
+    echo printErrorPage($settings, "Using a disallowed value for area.");
     return;
 }