array_key_exists() expects parameter 2 to be array, null given in Con…

…text.php line 76

Bugfix
array_key_exists() expects parameter 2 to be array, null given in Context.php line 76

src/Context.php

@@ -62,7 +62,7 @@ public function getProperties()
      */
     public function getProperty($key)
     {
-        return array_key_exists($key, $this->properties) ? $this->properties[$key] : null;
+        return array_key_exists($key, $this->properties) ? $this->properties[$key] : [];
     }
 
     /**