This is a very old version and you can not use the api of a newer version with that version of course. Just update your sytm to 18.104.22.168. Btw, if you want to keep your system secure and prevent data loss, then you should update regularily.
If not: how to update to the 22.214.171.124 version with 100% prevention of loosing data...? (the server is on production state and no data should be lost)
Just follow the normal update procedure as described in the release note: