chattt | ❯❯❯ Chat without leaving your terminal | Command Line Interface library

My requirement : I will be having a list of chat details in a table view.On top of table view ,there will be a search functionality using text field.based on unique id of user, search should get done.if there is no chat with the unique id, which the user entered,then it has to redirect to another screen which is called chatcreatepage. when ever we are searching chat, we will be using an api called FIND API and in that FIND API there is a chat dictionary,if it is null,then create chat will get called.If that chat dictionary is not nil then need to display that chat details in chat list table view. When the chat list page is loading then ,we will be calling Chat list Api.when we are searching the chat by entering the unique id in textfield,we will be getting the corresponding details of that entered unique id & that unique id details we have to show in the table view.

This is the task and i have done till the chat list showing in the table.FIND API Integration is also done.When i am reloading the data with search result(find api response),I am getting fatal error like "Unexpectedly found nil while unwrapping an Optional value" at the line of "var recepient = dict["recipient"] as! [String:Any]" . If anyone helps me to solve it, would be really great.Thank in advance.I am providing the code below.