Throw exception when namespace cannot be retrieved

CloudObjects/SDK/Helpers/SDKLoader.php

@@ -7,6 +7,7 @@
 namespace CloudObjects\SDK\Helpers;
 
 use Exception;
+use CloudObjects\SDK\Exceptions\InvalidSDKConfigurationException;
 use CloudObjects\SDK\NodeReader, CloudObjects\SDK\ObjectRetriever;
 
 /**
@@ -39,6 +40,9 @@ class SDKLoader {
     public function init(string $sdkName, array $options = []) : mixed {
         $namespace = $this->objectRetriever->getAuthenticatingNamespaceCloudObject();
 
+        if (!$namespace)
+            throw new InvalidSDKConfigurationException("The authenticating namespace object could not be retrieved.");
+
         switch (strtolower($sdkName)) {
             case "sentry":
                 // --- Sentry (https://sentry.io/) ---
@@ -69,6 +73,9 @@ class SDKLoader {
         if (!isset($this->classes[$hashkey])) {
             $nsNode = $this->objectRetriever->getAuthenticatingNamespaceObjectNode();
 
+            if (!$nsNode)
+                throw new InvalidSDKConfigurationException("The authenticating namespace object could not be retrieved.");
+
             // --- Amazon Web Services (https://aws.amazon.com/) ---
             // has multiple classnames, so check for common superclass
             if (is_a($classname, 'Aws\AwsClient', true)) {