iOS 11 and Alamofire HTTP error

My code that have been working on previous versions of Xcode and iOS, now has following error:

TIC TCP Conn Failed [1:0x1c416bd00]: 1:61 Err(61)
HTTP load failed (error code: -1004 [1:61])

Code:

let params : Parameters = ...
 Alamofire.request("....", parameters: params).responseJSON {
    response in
}