error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

[VictorBarbosa]

Platform: macOS / M1

Version 3.0 contains this issue: even with a simple project, if you create a new project and add version 3.0, this error occurs. This happens during the Build and Run process. Does anyone know how to fix this?

 
Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentAction.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentAction.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentAction.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentInfo.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentInfo.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentInfo.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentInfoActionPair.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentInfoActionPair.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentInfoActionPair.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/BrainParameters.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/BrainParameters.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/BrainParameters.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Capabilities.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Capabilities.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Capabilities.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Command.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Command.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Command.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/CustomResetParameters.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/CustomResetParameters.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/CustomResetParameters.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/DemonstrationMeta.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/DemonstrationMeta.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/DemonstrationMeta.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/EngineConfiguration.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/EngineConfiguration.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/EngineConfiguration.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Header.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Header.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Header.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Observation.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Observation.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Observation.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/SpaceType.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/SpaceType.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/SpaceType.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/TrainingAnalytics.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/TrainingAnalytics.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/TrainingAnalytics.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityInput.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityInput.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityInput.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityMessage.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityMessage.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityMessage.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityOutput.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityOutput.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityOutput.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInitializationInput.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInitializationInput.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInitializationInput.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInitializationOutput.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInitializationOutput.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInitializationOutput.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInput.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInput.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInput.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlOutput.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlOutput.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlOutput.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityToExternal.cs(8,20): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityToExternal.cs(9,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityToExternal.cs(10,21): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/EngineConfiguration.cs(56,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentInfo.cs(59,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityInput.cs(59,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/BrainParameters.cs(65,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Capabilities.cs(63,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/CustomResetParameters.cs(53,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityMessage.cs(60,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentAction.cs(55,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Observation.cs(77,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/TrainingAnalytics.cs(69,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/DemonstrationMeta.cs(56,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/BrainParameters.cs(263,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityOutput.cs(59,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Header.cs(53,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/AgentInfoActionPair.cs(58,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInitializationOutput.cs(64,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInitializationInput.cs(61,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInput.cs(64,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/Observation.cs(427,32): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityToExternalGrpc.cs(29,27): error CS0400: The type or namespace name 'Google' could not be found in the global namespace (are you missing an assembly reference?)

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlOutput.cs(62,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlInput.cs(243,32): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/UnityRlOutput.cs(213,32): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Library/PackageCache/com.unity.ml-agents/Runtime/Grpc/CommunicatorObjects/TrainingAnalytics.cs(394,28): error CS0538: 'Google.Protobuf.IMessage' in explicit interface declaration is not an interface

Error building Player because scripts had compiler errors

Build completed with a result of 'Failed' in 3 seconds (2917 ms)
88 errors
UnityEditor.BuildPlayerWindow:BuildPlayerAndRun () (at /Users/bokken/build/output/unity/unity/Editor/Mono/BuildPlayerWindow.cs:200)
 

[Steven9Smith]

Had the same problem when upgrade from Unity 2023 to Unity 6. For me, I got it working by downloading the latest ml-agents packages from the develop branch and copy them into my project after deleting the previous folders (If you have custom code in them you should back them up). Then I went into my assets folder and updated the ModelOverrider.cs script because there a change that broke it. You can also try downloading the Google.Protobuf dll from the develop branch too and try overriding the assembly references in the assembly definition but I couldn't get that to work easily so i just downloaded whatever was in the develop branch.

I would classify this as a bug as well, idk why the references broke all of the sudden when I been upgrading from different versions of Unity 2022 & 2023

[miguelalonsojr]

@VictorBarbosa What version of Unity are you using?

[LeThaiThinh18021228]

I got same error using unity 6000.0.30f1

[EremesNG]

Had the same problem when upgrade from Unity 2023 to Unity 6. For me, I got it working by downloading the latest ml-agents packages from the develop branch and copy them into my project after deleting the previous folders (If you have custom code in them you should back them up). Then I went into my assets folder and updated the ModelOverrider.cs script because there a change that broke it. You can also try downloading the Google.Protobuf dll from the develop branch too and try overriding the assembly references in the assembly definition but I couldn't get that to work easily so i just downloaded whatever was in the develop branch.

I would classify this as a bug as well, idk why the references broke all of the sudden when I been upgrading from different versions of Unity 2022 & 2023

It worked for me too 🙏