Gmail's vacation response not working

I was trying to set up gmail's vacation response option. I tried with two gmail accounts. But none was successful. I get following error message:

You have enabled the vacation responder but you have not provided a response message.​

But each time I supplied subject and body of message.


Any idea?

 

Well it's working just as always for me it's working fine.

 

I don't know why my vacation responder doesn't work in gmail

 

mine is working good too.

i have heard this for the first time