unity编译webgl的时候提示错误，找不到netstandard 2.0.0.0

一台新机器，安装了win10系统，主要作为Jenkins的Slave工作节点，编译Unity相关项目。结果悲剧的是，频频提示找不到netstandard 2.0.0.0

错误信息

错误信息如下，最主要的信息已经标红

***Player size statistics***
Level 0 'Assets/Scenes/InIt.unity' uses 0.5 MB compressed / 1.6 MB uncompressed.
Level 1 'Assets/Scenes/Loading.unity' uses 0.9 MB compressed / 1.4 MB uncompressed.
Level 2 'Assets/Scenes/OnlineScene/Brand_A1.unity' uses 27.8 MB compressed / 55.2 MB uncompressed.
Total compressed size 29.2 MB. Total uncompressed size 58.2 MB.
DisplayProgressbar: Scripting
DisplayProgressbar: Building Player
Invoking UnityLinker with arguments: -out=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/tempStrip -x=C:/Users/win10/AppData/Local/Temp/tmp1c329766.tmp -x=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/TypesInScenes.xml -d=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed --include-unity-root-assembly=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/Assembly-CSharp.dll --include-unity-root-assembly=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/Unity.RenderPipelines.Core.Runtime.dll --include-unity-root-assembly=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/UnityEngine.UI.dll --include-unity-root-assembly=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/Unity.Postprocessing.Runtime.dll --dotnetruntime=il2cpp --dotnetprofile=unityaot --use-editor-options --include-directory=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed --rule-set=Conservative --editor-data-file=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/EditorToUnityLinkerData.json --platform=WebGL --engine-modules-asset-file="C:/Program Files/Unity/Editor/Data/PlaybackEngines/WebGLSupport/Whitelists/../modules.asset"
C:\Program Files\Unity\Editor\Data\il2cpp\build/deploy/net471/UnityLinker.exe exited after 3010 ms.
Failed running C:\Program Files\Unity\Editor\Data\il2cpp\build/deploy/net471/UnityLinker.exe -out=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/tempStrip -x=C:/Users/win10/AppData/Local/Temp/tmp1c329766.tmp -x=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/TypesInScenes.xml -d=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed --include-unity-root-assembly=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/Assembly-CSharp.dll --include-unity-root-assembly=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/Unity.RenderPipelines.Core.Runtime.dll --include-unity-root-assembly=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/UnityEngine.UI.dll --include-unity-root-assembly=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/Unity.Postprocessing.Runtime.dll --dotnetruntime=il2cpp --dotnetprofile=unityaot --use-editor-options --include-directory=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed --rule-set=Conservative --editor-data-file=E:/jenkins/workspace/Unity-AssetBundle-Package/TestUnity/OnlineWeb_0312/Temp/StagingArea/Data/Managed/EditorToUnityLinkerData.json --platform=WebGL --engine-modules-asset-file="C:/Program Files/Unity/Editor/Data/PlaybackEngines/WebGLSupport/Whitelists/../modules.asset"
#--------- 错误重要提示信息，这块是我标注的信息--------------
# 以下乱码产生字 重定向的日志文件，在unity中不是乱码，大致意思是找不到 netstandard.dll 2.00
stdout:
stderr:

δ��������쳣:  System.IO.FileNotFoundException: δ�ܼ����ļ�����