add key failed again

OkHttp: --> POST https://domofon.dom38.ru/api/phones/allow http/1.1
OkHttp: Content-Type: application/x-www-form-urlencoded
OkHttp: Content-Length: 52
OkHttp: phone=79027659149&contracts=5559a43ab17580a44b27beef
OkHttp: --> END POST (52-byte body)
OkHttp: <-- 500 Internal Server Error https://domofon.dom38.ru/api/phones/allow (414ms)
OkHttp: Date: Sun, 20 May 2018 15:07:30 GMT
OkHttp: Server: Apache/2.4.10 (Ubuntu)
OkHttp: X-Powered-By: Express
OkHttp: Access-Control-Allow-Origin: *
OkHttp: Access-Control-Allow-Methods: GET, POST, OPTIONS, PUT, PATCH, DELETE
OkHttp: Access-Control-Allow-Headers: X-Requested-With,Content-Type,Authorization,Access-Control-Allow-Headers
OkHttp: Access-Control-Allow-Credentials: true
OkHttp: Content-Type: application/json; charset=utf-8
OkHttp: Content-Length: 66
OkHttp: ETag: W/"42-zH9ZiRlMHUhKJ18MLxWzZXTq6Ok"
OkHttp: Vary: Accept-Encoding
OkHttp: set-cookie: connect.sid=s%3Ado27YXlBMhsfFoHI0w3cpAaaXBHfYQLR.wovrYQ1C8ev8C2wxaeyEOSYB%2FKZmetimsIstHnRrkrY; Path=/; HttpOnly
OkHttp: Via: 1.1 domofon.dom38.ru (Apache/2.4.10)
OkHttp: Connection: close
OkHttp: {"name":"TypeError","message":"contracts.shift is not a function"}
OkHttp: <-- END HTTP (66-byte body)