[REQUIRED] Please fill in the following fields:

• Unity editor version: 2020.3.18f1
• Firebase Unity SDK version: 8.1.0
• Source you installed the SDK: Unity Package Manager
• Problematic Firebase Component: Remote Config
• Other Firebase Components in use: Firestore, Crashlytics, Auth
• Additional SDKs you are using:
• Platform you are using the Unity editor on: Windows
• Platform you are targeting: Android (Unity Editor is also affected)
• Scripting Runtime: IL2CPP

[REQUIRED] Please describe the issue here:

When setting the cache expiration of FetchAsync() to TimeSpan.Zero (or any other TimeSpan), an exception is thrown with ErrorCode 1. The Message parameter is empty.

Steps to reproduce:

Relevant Code:

await FirebaseRemoteConfig.DefaultInstance.FetchAsync(TimeSpan.Zero); //This (or any other TimeSpan) will result in an exception