Application Build with sdk .NET9 were not working in Azure app service(Linux)

Description

I have a simple Blazor Server app that I upgraded from .NET8 to .NET9. No problem (Debug/Release). When deploying to Azure App Service, I get the error page : :( Application Error If you are the application administrator, you can access the [diagnostic resources].

I have no errror during my deployment. All lights are green

Reproduction Steps

Here's my pipeline where I simply changed the SDK version from 8.0 to 9.0.100

`trigger:

master

pool: vmImage: ubuntu-latest

variables: buildConfiguration: 'Release'

steps:

task: UseDotNet@2 displayName: 'Installing .NET Core SDK...' inputs: packageType: 'sdk' version: '9.0.100'
script: dotnet build --configuration $(buildConfiguration) myproj/myproj.csproj displayName: 'dotnet build $(buildConfiguration)...'
task: DotNetCoreCLI@2 displayName: 'Publishing App...' inputs: command: publish publishWebProjects: false projects: 'myproj/myproj.csproj' arguments: '--configuration $(BuildConfiguration) --output $(Build.ArtifactStagingDirectory)' zipAfterPublish: true
task: PublishBuildArtifacts@1 displayName: 'Publishing Build Artifacts...'`

My agent job :

`steps:

task: AzureRmWebAppDeployment@4 displayName: 'Azure App Service Deploy: MyProj' inputs: azureSubscription: 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' appType: webAppLinux WebAppName: SodeaSoftStore packageForLinux: '$(System.DefaultWorkingDirectory)/_Website /drop/MyProj.zip' RuntimeStack: 'DOTNETCORE|9.0' StartupCommand: 'dotnet MyProj.dll'`

Expected behavior

The application should work properly without any errors as it runs properly in Local and works perfectly with .NET 8 ( local and deployed)

Actual behavior

only this error page : :( Application Error If you are the application administrator, you can access the [diagnostic resources].

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

No response

dotnet / runtime