Azure Pipeline dotnet push error finding nuget package

[enter image description here][1]

My code for the azure pipeline[1]: https://i.stack.imgur.com/mnuiY.png

I have Problems using the azure pipeline, which will automatically pack my libraries on azure devops git and push it as a nugetpackage to artifacts.

I get the error ##[error]No packages matched the search pattern.at dotnet push

Until that step everything works. I want to pack it as a nuget so i can use it in other projects.Its a API Client i wrote for my own API.