Getting an error

[Dominos111G]

Hi I'm getting error from nlohmann json and I don't know if it would be mine mistake or bug in library. I searched everywere but could't find solution.

Error and popup:
Assertion failed: it != m_data.m_value.object->end(), file C:\Users\domin\source\repos\StatStrike\includes\json.hpp, line 22188

Nlohmann code:

[nlohmann]

See https://json.nlohmann.me/features/element_access/unchecked_access/ - you try to access a nonexisting object key.