Bug: Serializing an object dictionary works in the Unity editor but not in the standalone player

[synthetic-borealis]

Description
Serializing a Dictionary<string, object> produces correct results when running inside the Unity editor, but results in an exception when running in a standalone player.

How to reproduce the bug

SerializerConfig configuration = new SerializerConfig();
CerasUnityFormatters.ApplyToConfig(configuration);
configuration.Advanced.EmbedChecksum = true;
Dictionary<string, object> dict = new Dictionary<string, object>();
dict["A"] = Mathf.PI;
dict["B"] = 6;
dict["c"] = "Hello";

CerasSerializer serializer = new CerasSerializer(configuration);
byte[] buffer = serializer.Serialize(dict);

Platform

• Unity 2021.1.13f
• .NET Standard 2.0

Additional Information
Player log file: Player.log