Thanks for the additional information. Unfortunately most of classes in the screenshot are unknown to me, these seem to be from your own or a thirdparty serialization library. Without additional information, it's impossible to diagnose the issue, and it's especially hard when posting code as a screenshot and not as text. You can use three backticks ``` before and after code to format code blocks:
void yourMethod () {
int number;
}
If you can create a minimal Unity project which shows this issue, we can have a look at it. E.g. create just a minimal scene or prefab which is serialized to json which shows this issue, without any game logic. And describe the necessary steps to be performed to reproduce the issue. You can send it as a zip package to contact@esotericsoftware.com, briefly mentioning this forum thread URL so that we know the context.