ExpandableTableView | Expandable TableView in swift | RecyclerView library

Gif depicting that :

When user selecting table view cell for first time(checkbox ticked first time) , cell getting selected but after that it is deselected automatically and nothing happens when i am tapping second time. But when i am tapping third time cell getting selected properly and on 4th tap it is deselecting properly and so on for 5th , 6th time onwards.

My didSelectRowAt() method looks like this :

I'm new to iOS and making an ExpandableTableView with JSON data. The data is in form of nested arrays. I want to set data of parent array as TableView header and data of child array as ExpandableTable elements. I'm performing JSONDecoding through struct and enums and storing the response in DataModelClass. While Decoding it's throwing error

i'm using an ViewController that is connected with an tableview and use ExpandableCell lib for expand UITableviewcell.

I created a expandcell with UICollectionview in storyboard but when i use dequeueReusableCell he won't load UICollectionview

I'm using Swift 4 Xcode 9.2

Here is my code at View Controller

I have been following this tutorial Youtube, I am trying to make a slide out menu, but I get an error unexpectedly found nil while unwrapping an optional value. I believe it has to do with self.storyboard?.instantiateViewController(withIdentifier: "SlideMenuView") as! SlideMenuView? but I am not sure, My code is below:

I want a self sizing table view cell to work in the following. I have four labels in one cell. All the labels will have long contents.

Right now, the problem is - if the second label has more contents, then all the below labels go invisible.

Refer Screen-1 I'm using ExpandingTableView.framework library (github.com/jozsef-vesza/ExpandableTableView) from Github. I've attached the project below.

Screen 1