diff --git a/Classes/Configuration/Loader/SiteSets/AbstractConfigurationLoader.php b/Classes/Configuration/Loader/SiteSets/AbstractConfigurationLoader.php
index eb33e167..71dc7152 100644
--- a/Classes/Configuration/Loader/SiteSets/AbstractConfigurationLoader.php
+++ b/Classes/Configuration/Loader/SiteSets/AbstractConfigurationLoader.php
@@ -63,7 +63,7 @@ public function getConfigurationsForType(string $configurationType, ?string $cou
     {
         $configurations = $this->site->getSettings()->getAll();
         if (is_array($configurations['extcode']) === false
-            || is_array($configurations['extcode'][$configurationType]) === false
+            || is_array($configurations['extcode'][$configurationType] ?? null) === false
         ) {
             return null;
         }
diff --git a/Classes/Configuration/Loader/TypoScript/AbstractConfigurationLoader.php b/Classes/Configuration/Loader/TypoScript/AbstractConfigurationLoader.php
index 7c32ac95..10f83475 100644
--- a/Classes/Configuration/Loader/TypoScript/AbstractConfigurationLoader.php
+++ b/Classes/Configuration/Loader/TypoScript/AbstractConfigurationLoader.php
@@ -48,7 +48,7 @@ public function getServices(?array $configurations, array $services, Cart $cart)
 
     public function getConfigurationsForType(string $configurationType, ?string $country = null): ?array
     {
-        if (is_array($this->configurations[$configurationType]) === false
+        if (is_array($this->configurations[$configurationType] ?? null) === false
         ) {
             return null;
         }