public record Config(
string test);
var options = new JsonSerializerOptions()
.SetMissingMemberHandling(MissingMemberHandling.Error);
JsonSerializer.Deserialize<Config>("{\"test\":\"test\"}", options);
Unhandled exception. System.MissingMethodException: Cannot dynamically create an instance of type 'TestProject.Config'. Reason: No parameterless constructor defined.