From f6c5fa3bfca1d430697a8c5390e5bb27814ea5db Mon Sep 17 00:00:00 2001
From: Rajneel Totaram <rjnlfj@yahoo.com>
Date: Sun, 16 Apr 2023 19:59:53 +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 cacfc2f16bc..fbb7d48c89b 100644
--- a/lib/accesslib.php
+++ b/lib/accesslib.php
@@ -2646,7 +2646,7 @@ 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 $capabilityname.' ???';
     }
@@ -2670,7 +2670,7 @@ function get_component_string($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 . ' ???';
     }