问AzureDevops和dotnet包：##[错误]没有与搜索模式匹配的文件

EN

/
    RandExp.sln
        /RandExp
            RandExp.fsproj

        /Tests
            Tests.fsproj

trigger:
- ci

pool:
  vmImage: "ubuntu-latest"

variables:
  buildConfiguration: "Release"

steps:
- task: GitVersion@5
  inputs:
    runtime: 'core'
    updateAssemblyInfo: true

- task: DotNetCoreCLI@2
  displayName: "DotNet restore"
  inputs:
    command: 'restore'
- task: DotNetCoreCLI@2
  displayName: "DotNet build $(buildConfiguration)"
  inputs:
    command: 'build'
    arguments: '--configuration $(buildConfiguration) --no-restore'
  
- task: DotNetCoreCLI@2
  displayName: "DotNet test ($(buildConfiguration))"
  inputs:
    command: test
    arguments: '--configuration $(buildConfiguration)'
    
- task: DotNetCoreCLI@2
  displayName: "DotNet pack"
  inputs:
    command: 'pack'
    nobuild: true
    versioningScheme: 'byBuildNumber'

- task: DotNetCoreCLI@2
  displayName: "DotNet push"
  inputs:
    command: 'push'
    packagesToPush: '$(Build.ArtifactStagingDirectory)/*.nupkg'
    nuGetFeedType: 'external'
    publishFeedCredentials: 'Public Nuget'

Starting: DotNet pack
==============================================================================
Task         : .NET Core
Description  : Build, test, package, or publish a dotnet application, or run a custom dotnet command
Version      : 2.175.0
Author       : Microsoft Corporation
Help         : https://docs.microsoft.com/azure/devops/pipelines/tasks/build/dotnet-core-cli
==============================================================================
##[error]No files matched the search pattern.
Info: Azure Pipelines hosted agents have been updated to contain .Net Core 3.x (3.1) SDK/Runtime along with 2.1. Unless you have locked down a SDK version for your project(s), 3.x SDK might be picked up which might have breaking behavior as compared to previous versions. 
Some commonly encountered changes are: 
If you're using `Publish` command with -o or --Output argument, you will see that the output folder is now being created at root directory rather than Project File's directory. To learn about more such changes and troubleshoot, refer here: https://docs.microsoft.com/en-us/azure/devops/pipelines/tasks/build/dotnet-core-cli?view=azure-devops#troubleshooting
Finishing: DotNet pack