Azure Pipeline (YAML) deploys an empty solution to my FunctionApp - azure

Question

I'm building a CI-CD azure pipeline with YAML to deploy an azure function app.
Everything works fine, I can even set some properties for the function app, but my function app remains empty.
I downloaded the zip artifact and it looks just fine.
trigger:
- master
variables:
variables:
buildConfiguration: 'Release'
Parameters.RestoreBuildProjects: '**/TestFunction.csproj'
stages:
- stage: Build
jobs:
- job:
pool:
vmImage: 'vs2017-win2016'
continueOnError: false
steps:
- task: DotNetCoreCLI#2
displayName: 'Restore'
inputs:
command: 'restore'
projects: '$(Parameters.RestoreBuildProjects)'
feedsToUse: 'select'
vstsFeed: '/0856b234-f3a6-4052-b5a6-ed9f6ec9c635'
- task: DotNetCoreCLI#2
displayName: Build
inputs:
projects: '$(Parameters.RestoreBuildProjects)'
arguments: '--configuration $(BuildConfiguration)'
- task: DotNetCoreCLI#2
displayName: 'Publish Build'
inputs:
command: publish
arguments: '--configuration $(BuildConfiguration)'
projects: '$(Parameters.RestoreBuildProjects)'
publishWebProjects: false
modifyOutputPath: true
zipAfterPublish: false
- task: ArchiveFiles#2
displayName: "Archive Files"
inputs:
rootFolderOrFile: "$(System.DefaultWorkingDirectory)"
includeRootFolder: false
archiveFile: "$(System.DefaultWorkingDirectory)/build$(Build.BuildId).zip"
- task: PublishBuildArtifacts#1
inputs:
PathtoPublish: '$(System.DefaultWorkingDirectory)/build$(Build.BuildId).zip'
ArtifactName: 'drop'
- stage: Deploy
jobs:
# track deployments on the environment
- deployment:
pool:
vmImage: 'vs2017-win2016'
# creates an environment if it doesn’t exist
environment: 'dev'
strategy:
# default deployment strategy
runOnce:
deploy:
steps:
- task: DownloadBuildArtifacts#0
displayName: 'Download Artifacts'
inputs:
buildType: 'current'
downloadType: 'specific'
downloadPath: '$(System.ArtifactsDirectory)'
- task: AzureFunctionApp#1
displayName: 'Azure Function App Deploy: ngproductionfetcherfuncref'
inputs:
azureSubscription: 'Agder Energi Sandbox (1aa9cf92-9d42-49a6-8d31-876ac2dff562)'
appType: functionApp
appName: myFunctionApp
package: '$(System.ArtifactsDirectory)/**/*.zip'
appSettings: '-name0 value0 -name1 value1'
The pipeline is all green:
Got service connection details for Azure App Service:'myFunctionApp'
Updating App Service Application settings. Data: {"WEBSITE_RUN_FROM_PACKAGE":"1"} {"WEBSITE_RUN_FROM_ZIP":{"value":""}}
Updated App Service Application settings and Kudu Application settings.
Package deployment using ZIP Deploy initiated.
Successfully deployed web package to App Service.
Updating App Service Application settings. Data: {"name0":"value0","name1":"value1"} undefined
Updated App Service Application settings and Kudu Application settings.