From f74f702c88cfbb1d67c6c3c022e2d32a33f5c129 Mon Sep 17 00:00:00 2001
From: Rajneel Totaram <rjnlfj@yahoo.com>
Date: Thu, 20 Apr 2023 19:44:17 +1200
Subject: [PATCH] MDL-77930 accesslib: php81 deprecation warnings on missing
 plugins

---
 lib/accesslib.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/accesslib.php b/lib/accesslib.php
index 1000d93aa94..e999455c13d 100644
--- a/lib/accesslib.php
+++ b/lib/accesslib.php
@@ -2699,7 +2699,7 @@ function get_capability_string($capabilityname) {
     }
 
     $dir = core_component::get_component_directory($component);
-    if (!file_exists($dir)) {
+    if (!isset($dir) || !file_exists($dir)) {
         // plugin broken or does not exist, do not bother with printing of debug message
         return $capabilityname.' ???';
     }
@@ -2723,7 +2723,7 @@ function get_component_string($component, $contextlevel) {
 
     list($type, $name) = core_component::normalize_component($component);
     $dir = core_component::get_plugin_directory($type, $name);
-    if (!file_exists($dir)) {
+    if (!isset($dir) || !file_exists($dir)) {
         // plugin not installed, bad luck, there is no way to find the name
         return $component . ' ???';
     }