An exception occurred while invoking method: 'weatherforecast' on app-id: 'MyBackEnd'

[agbenway]

Getting error: Dapr.Client.InvocationException: An exception occurred while invoking method: 'weatherforecast' on app-id: 'MyBackEnd'

I'm using Visual Studio 2022 and creating a ASP.NET Core Web API project for MyBackEnd and ASP.NET Core Web App project for MyFrontEnd.

When running MyBackEnd I see the Swagger page coming up, I think, properly:

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Document Details

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• ID: 83e95a3f-447b-8ca0-beb5-f0363896fe29
• Version Independent ID: b24e3ee5-404c-98a2-042e-6ac2d363b842
• Content: Get started with Dapr
• Content Source: docs/architecture/dapr-for-net-developers/getting-started.md
• Product: dotnet-architecture
• GitHub Login: @amolenk
• Microsoft Alias: nanil

[amolenk]

Hi @agbenway

Does the call succeed if you invoke /WeatherForecast from the Swagger page?

Also, can you share your Docker compose file?

[agbenway]

@amolenk,

I figured it out. I needed to have "docker-compose" as the Startup Project.

So the call of /WeatherForecast was not working because I was only starting up MyFontEnd or MyBackEnd at a time, not both at once.

Thanks

[luber]

I have the same error. I am not using Docker-Compose but Kubernetes.
I start backend and frontend apps manually from command line:

dapr run --app-id MyBackEnd --app-port 5109 --app-protocol http --dapr-http-port 3500 --resources-path ../components -- dotnet run

dapr run --app-id MyFrontEnd --app-port 5046 --app-protocol http --dapr-http-port 3501 --resources-path ../components -- dotnet run

[luber]

The issue was related to mDNS. So I ended up using Consul for DNS resolutions.