The PowerShell module for validating your SQL Server estate dbachecks is deployed via Azure DevOps, you can see how it is working (or not) via this link
Grrr Automation for the Lose!
Until recently, this had worked successfully. In the last few weeks I have been receiving errors
Exception : Microsoft.PowerShell.Commands.WriteErrorException: Failed to generate the compressed file for module 'C:Program Filesdotnetdotnet.exe failed to pack: error C:Program Filesdotnetsdk3.0.100SdksNuGet.Build.Tasks.PackbuildNuGet.Build.Tasks.Pack.targets(198,5): error :
2 Index was outside the bounds of the array.
[C:UsersVssAdministratorAppDataLocalTempcbc14ba6-5832-46fd-be89-04bb552a83acTemp.csproj]
'.
At C:Program FilesWindowsPowerShellModulesPowerShellGet2.2.1PSModule.psm1:10944 char:17
20 Publish-PSArtifactUtility @PublishPSArtifactUtility_Param ...
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [Write-Error], WriteErrorException
2019-11-25T22:44:46.8459493Z + FullyQualifiedErrorId : FailedToCreateCompressedModule,Publish-PSArtifactUtilityYou can see these errors in the release pipeline logs here
Confusion
This was very frustrating as it was stopping the continuous delivery to the PowerShell Gallery. It was even more confusing as I was successfully deploying the ADSNotebook module to the gallery using the same method as you can see here.
Raise an Issue on GitHub
I went and looked at the PowerShellGet GitHub repository and opened an issue I also found another issue regarding Required Modules
But this doesnt help to get dbachecks released.
Just Try to Make it Work
I asked the wonderful folk in the PowerShell Slack channel – Through the magic of automation, you can also interact with them via the powershellhelp channel in the SQL Server Slack as well but there were no answers that could assist.
So I had to go searching for an answer. PowerShellGet uses nuget for package management. I found that if I downloaded an earlier version and placed it in my user profile (in the right location) I could publish the module.
I found this out by removing the nuget.exe from anywhere useful on the machine and trying to publish the module. The error message says
NuGet.exe upgrade is required to continue
This version of PowerShellGet requires minimum version '4.1.0' of NuGet.exe to publish an item to the NuGet-based repositories. NuGet.exe must be available in
'C:ProgramDataMicrosoftWindowsPowerShellPowerShellGet' or 'C:UsersBeardyMcBeardFaceAppDataLocalMicrosoftWindowsPowerShellPowerShellGet', or under
one of the paths specified in PATH environment variable value. NuGet.exe can be downloaded from https://aka.ms/psget-nugetexe. For more information, see
https://aka.ms/installing-powershellget . Do you want PowerShellGet to upgrade to the latest version of NuGet.exe now?If I said yes then I got the latest version and the error continued.
However, on my laptop I can go to the nuget downloads page and download an earlier version and place it in one of those paths then I could publish the module.
Can I Automate it?
I would rather not have to deploy manually though, and as I use hosted agents my access to the operating system is limited so I wondered if I could place the nuget.exe in the user profile and it would get used or if it would look for the the latest one. Turns out it uses the one in the user profile 
So now I have this code as a step in my Azure DevOps Release pipeline before calling Publish-Module and we have automated the releases again.
and now deployments to the PowerShell Gallery are just triggered by the build and the pipeline is green again
