fix for BIESt #1118

Merge request studip/studip!676

2 files changed, 5 insertions, 5 deletions

diff --git a/lib/plugins/engine/PluginManager.class.php b/lib/plugins/engine/PluginManager.class.php
index 7193f31..7ced174 100644
--- a/lib/plugins/engine/PluginManager.class.php
+++ b/lib/plugins/engine/PluginManager.class.php
@@ -657,9 +657,9 @@ class PluginManager
         }
 
         foreach ($manifest as $line) {
-            list($key, $value) = explode('=', $line);
-            $key = trim($key);
-            $value = trim($value);
+            $key_and_value = explode('=', $line);
+            $key = trim($key_and_value[0]);
+            $value = trim($key_and_value[1] ?? '');
 
             // skip empty lines and comments
             if ($key === '' || $key[0] === '#') {
diff --git a/lib/plugins/engine/PluginRepository.class.php b/lib/plugins/engine/PluginRepository.class.php
index ef09a6c..14415f4 100644
--- a/lib/plugins/engine/PluginRepository.class.php
+++ b/lib/plugins/engine/PluginRepository.class.php
@@ -116,7 +116,7 @@ class PluginRepository
      */
     protected function registerPlugin($name, $meta_data)
     {
-        $old_data = $this->plugins[$name];
+        $old_data = $this->plugins[$name] ?? null;
 
         if (!isset($old_data) ||
             version_compare($meta_data['version'], $old_data['version']) > 0) {
@@ -132,7 +132,7 @@ class PluginRepository
      */
     public function getPlugin($name)
     {
-        return $this->plugins[$name];
+        return $this->plugins[$name] ?? null;
     }
 
     /**