diff --git a/app/Controllers/BaseController.php b/app/Controllers/BaseController.php
index 0328f140bfdf..122db5f9a9f2 100644
--- a/app/Controllers/BaseController.php
+++ b/app/Controllers/BaseController.php
@@ -19,7 +19,7 @@
  *
  * For security be sure to declare any new methods as protected or private.
  */
-class BaseController extends Controller
+abstract class BaseController extends Controller
 {
     /**
      * Instance of the main Request object.
diff --git a/phpstan-baseline.neon.dist b/phpstan-baseline.neon.dist
index f2cad007146e..8d8834cb57dc 100644
--- a/phpstan-baseline.neon.dist
+++ b/phpstan-baseline.neon.dist
@@ -485,11 +485,6 @@ parameters:
 			count: 1
 			path: system/Debug/Exceptions.php
 
-		-
-			message: "#^Parameter \\#4 \\$replacement of function array_splice expects array\\|string, true given\\.$#"
-			count: 1
-			path: system/Debug/Exceptions.php
-
 		-
 			message: "#^Property CodeIgniter\\\\Debug\\\\Exceptions\\:\\:\\$formatter \\(CodeIgniter\\\\Format\\\\FormatterInterface\\) in isset\\(\\) is not nullable\\.$#"
 			count: 1
diff --git a/system/Config/Routes.php b/system/Config/Routes.php
index 4ace952bc3c8..14735e27432f 100644
--- a/system/Config/Routes.php
+++ b/system/Config/Routes.php
@@ -21,11 +21,6 @@
  * already loaded up and ready for us to use.
  */
 
-// Prevent access to BaseController
-$routes->add('BaseController(:any)', static function () {
-    throw PageNotFoundException::forPageNotFound();
-});
-
 // Prevent access to initController method
 $routes->add('(:any)/initController', static function () {
     throw PageNotFoundException::forPageNotFound();