通过管道“NoMethodError”发送的对象序列化

I am using pipes in ruby and I am failing to send a serialized object through the pipe. I am encountering a "NoMethodError" which is wierd because I am sending a struct. I tried adding a function, but when I call the function I get the same error. What is causing this and what is the solution?I am using pipes in ruby and I am failing to se