Update 2016_05_02_193213_create_gateway_transactions_table.php

default value for created_at and updated_at should be null or in its special format. By default it uses 0 as default value and it causes an error :)

migrations/2016_05_02_193213_create_gateway_transactions_table.php

@@ -43,7 +43,7 @@ public function up()
 			])->default(Enum::TRANSACTION_INIT);
 			$table->string('ip', 20)->nullable();
 			$table->timestamp('payment_date')->nullable();
-			$table->timestamps();
+			$table->nullableTimestamps();
 			$table->softDeletes();
 		});
 	}