SSL certificate error while creating a package for Octopus

I want to create an online build definition VSTS (now Azure-DevOps) and then push the package to Octopus. But while executing the Package task I get the following error:

Error: unable to get local issuer certificate Failed to execute octo pack command. unable to get local issuer certificate

Can anyone provide me with some insights on this?

Solution

One of the ways could be to try changing/upgrading the nuget package version. Also verify the Source path you are providing of your Build server, it should be at the location where website data is stored after build.