Any sort of JSON deserializing stops code completely

[Kurt-Dekker]

Photographs of code are not a thing. If you post a code snippet, ALWAYS USE CODE TAGS:

How to use code tags: Using code tags properly

Everything you’re doing above will potentially block the main thread.

Networking in Unity is always best accomplished with UnityWebRequest(). Other options may not be fully supported.

Whenever you’re debugging networking, start here:

Networking, UnityWebRequest, WWW, Postman, curl, WebAPI, etc:

Using Unity for subscription lists

As with all network code, get it working with Postman or curl first. That makes it NOT a Unity problem. Solve the networking first. You must solve that or anything else is irrelevant. Once you have that working, then try and port it to UnityWebRequest. If it still doesn't work, one handy debug solution is to hook up a proxy like Charles and compare the functioning output from Postman / curl to the output from Unity, and from that reason about where your issues are.

Unity web request acting stupid.

Always get network stuff working outside of Unity in either curl or PostMan, then connect a proxy such as Charles and start trying to replicate the traffic shape with UnityWebRequest. Any other way risks wasting a lot of your time for trivial issues that only the above way will instantly reveal.

And setting up a proxy can be very helpful too, in order to compare traffic:

Using Charles Proxy with Unity

Problems with Unity “tiny lite” built-in JSON:

In general I highly suggest staying away from Unity’s JSON “tiny lite” package. It’s really not very capable at all and will silently fail on very common data structures, such as Dictionaries and Hashes and ALL properties.

Instead grab Newtonsoft JSON .NET off the asset store for free, or else install it from the Unity Package Manager (Window → Package Manager).

JSON .NET For Unity | Input Management | Unity Asset Store

Also, always be sure to leverage sites like:

JSON Online Validator and Formatter - JSON Lint

Convert JSON to C# Classes Online - Json2CSharp Toolkit

https://csharp2json.io