require at least the 1.5.1 version of the php-api-library because of the

new AppInfo parameters in the request

composer.json

@@ -14,7 +14,7 @@
     }
   ],
   "require": {
-    "adyen/php-api-library": "*",
+    "adyen/php-api-library": ">1.5.0",
     "magento/framework": ">=100.1.0"
   },
   "autoload": {