Fix notices in include/enotify

src/Database/DBStructure.php

@@ -83,6 +83,7 @@ class DBStructure
 			$body = sprintf($body, $error_message);
 
 			notification([
+				'uid'      => $admin['uid'],
 				'type'     => SYSTEM_EMAIL,
 				'to_email' => $admin['email'],
 				'preamble' => $preamble,