Issue with Unity.Tasks in the ios-firebase unity plugin

Question

I'm trying to upgrade to the latest IOS-Unity plugin and I keep getting this compilation error:

Assets/Scripts/Analytics.cs(38,16): error CS0012: The type System.Threading.Tasks.Task' is defined in an assembly that is not referenced. Consider adding a reference to assemblyUnity.Tasks, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'

It's worth noting that before this error it complained about a duplicate UnityCompat.dll file (defined in both Firebase/Plugins and Parse/Plugins -- I ended up removing the one in the Parse directory, but I have tried the opposite as well).

Any pointers would be great. Also worth noting that this happened after removing obsolete files from the PlayServices plugin when prompted.

Answer 1

Answering my own question (from https://groups.google.com/forum/#!topic/firebase-talk/2w1Lk62VIcg)

Parse/Plugins/Unity.Tasks needs to the enabled for compilation (using Unity's Inspector) Parse/Plugins/Unity.Compat needs to be disabled

Answer 2

I had a similar problem and resolved it by following the documentation : (https://firebase.google.com/docs/unity/setup#set_up_environment)

Assets > Play Services Resolver > Version Handler > Update to enable the correct DLLs for your project.