Fix Passing null to parameter #1 ($string) of type string

Author: Nazar65

lib/internal/Magento/Framework/Amqp/Config.php

@@ -5,12 +5,12 @@
  */
 namespace Magento\Framework\Amqp;
 
+use Magento\Framework\Amqp\Connection\Factory as ConnectionFactory;
 use Magento\Framework\Amqp\Connection\FactoryOptions;
 use Magento\Framework\App\DeploymentConfig;
 use Magento\Framework\App\ObjectManager;
-use PhpAmqpLib\Connection\AbstractConnection;
 use PhpAmqpLib\Channel\AMQPChannel;
-use Magento\Framework\Amqp\Connection\Factory as ConnectionFactory;
+use PhpAmqpLib\Connection\AbstractConnection;
 
 /**
  * Reads the Amqp config in the deployed environment configuration
@@ -23,20 +23,26 @@ class Config
     /**
      * Queue config key
      */
-    const QUEUE_CONFIG = 'queue';
+    public const QUEUE_CONFIG = 'queue';
 
     /**
      * Amqp config key
      */
-    const AMQP_CONFIG = 'amqp';
+    public const AMQP_CONFIG = 'amqp';
+
+    public const HOST = 'host';
+
+    public const PORT = 'port';
+
+    public const USERNAME = 'user';
+
+    public const PASSWORD = 'password';
+
+    public const VIRTUALHOST = 'virtualhost';
+
+    public const SSL = 'ssl';
 
-    const HOST = 'host';
-    const PORT = 'port';
-    const USERNAME = 'user';
-    const PASSWORD = 'password';
-    const VIRTUALHOST = 'virtualhost';
-    const SSL = 'ssl';
-    const SSL_OPTIONS = 'ssl_options';
+    public const SSL_OPTIONS = 'ssl_options';
 
     /**
      * Deployment configuration
@@ -140,7 +146,7 @@ public function getValue($key)
      */
     private function createConnection(): AbstractConnection
     {
-        $sslEnabled = trim($this->getValue(self::SSL)) === 'true';
+        $sslEnabled = trim($this->getValue(self::SSL) ?? '') === 'true';
         $options = new FactoryOptions();
         $options->setHost($this->getValue(self::HOST));
         $options->setPort($this->getValue(self::PORT));