Failed to build an image.

gravi32FREE

2 months ago

I'm new to railway and I'm trying to host a backend for a chat app I've been doing for a project.
I'm trying to build using a private Git repository, but I'm always getting the same error: "Failed to build an image" and I don't know why.

Any help would be much appreciated

This is my build log:
MSBuild version 17.3.2+561848881 for .NET

/nix/store/0f43yfx91hg74bcp66qkbp97zv3ln27i-dotnet-sdk-6.0.413/sdk/6.0.413/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(267,5): error MSB4018: NuGet.Packaging.Core.PackagingException: Unable to find fallback package folder 'C:\Program Files (x86)\Microsoft Visual Studio\Shared\NuGetPackages'. [/app/MessagyreServer.csproj]

/nix/store/0f43yfx91hg74bcp66qkbp97zv3ln27i-dotnet-sdk-6.0.413/sdk/6.0.413/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(267,5): error MSB4018: at NuGet.Packaging.FallbackPackagePathResolver..ctor(String userPackageFolder, IEnumerable`1 fallbackPackageFolders) [/app/MessagyreServer.csproj]

/nix/store/0f43yfx91hg74bcp66qkbp97zv3ln27i-dotnet-sdk-6.0.413/sdk/6.0.413/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(267,5): error MSB4018: at Microsoft.NET.Build.Tasks.NuGetPackageResolver.CreateResolver(IEnumerable`1 packageFolders) [/app/MessagyreServer.csproj]

/nix/store/0f43yfx91hg74bcp66qkbp97zv3ln27i-dotnet-sdk-6.0.413/sdk/6.0.413/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(267,5): error MSB4018: at Microsoft.NET.Build.Tasks.NuGetPackageResolver.CreateResolver(LockFile lockFile) [/app/MessagyreServer.csproj]

/nix/store/0f43yfx91hg74bcp66qkbp97zv3ln27i-dotnet-sdk-6.0.413/sdk/6.0.413/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(267,5): error MSB4018: at Microsoft.NET.Build.Tasks.ResolvePackageAssets.CacheWriter..ctor(ResolvePackageAssets task) [/app/MessagyreServer.csproj]

/nix/store/0f43yfx91hg74bcp66qkbp97zv3ln27i-dotnet-sdk-6.0.413/sdk/6.0.413/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(267,5): error MSB4018: at Microsoft.NET.Build.Tasks.ResolvePackageAssets.CacheReader.CreateReaderFromDisk(ResolvePackageAssets task, Byte[] settingsHash) [/app/MessagyreServer.csproj]

/nix/store/0f43yfx91hg74bcp66qkbp97zv3ln27i-dotnet-sdk-6.0.413/sdk/6.0.413/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(267,5): error MSB4018: at Microsoft.NET.Build.Tasks.ResolvePackageAssets.CacheReader..ctor(ResolvePackageAssets task) [/app/MessagyreServer.csproj]

/nix/store/0f43yfx91hg74bcp66qkbp97zv3ln27i-dotnet-sdk-6.0.413/sdk/6.0.413/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(267,5): error MSB4018: at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() [/app/MessagyreServer.csproj]

/nix/store/0f43yfx91hg74bcp66qkbp97zv3ln27i-dotnet-sdk-6.0.413/sdk/6.0.413/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(267,5): error MSB4018: at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [/app/MessagyreServer.csproj]

Solved

3 Replies

chandrikaEMPLOYEE

2 months ago

Hey Pietro, could you try checking our docs on https://docs.railway.com/reference/errors/nixpacks-was-unable-to-generate-a-build-plan and see if it's helpful?

It looks like you're running into something involving the ResolvePackageAssets task, it can be related to to NuGet package resolution. Can you double check that your .csproj file correctly references all necessary NuGet packages and that your package sources are accessible? You might want to check your NuGet.config file to verify the package source paths.

Also, you might need to define config in a custom build plan or a Dockerfile. You can refer to the Nixpacks documentation on how to set up a build plan.

Status changed to Awaiting User Response railway[bot] • 2 months ago

chandrika

Hey Pietro, could you try checking our docs on https://docs.railway.com/reference/errors/nixpacks-was-unable-to-generate-a-build-plan and see if it's helpful?It looks like you're running into something involving the ResolvePackageAssets task, it can be related to to NuGet package resolution. Can you double check that your .csproj file correctly references all necessary NuGet packages and that your package sources are accessible? You might want to check your NuGet.config file to verify the package source paths.Also, you might need to define config in a custom build plan or a Dockerfile. You can refer to the Nixpacks documentation on how to set up a build plan.

gravi32FREE

2 months ago

Thank you so much, creating a Dockerfile made the job.

Status changed to Awaiting Railway Response railway[bot] • 2 months ago

chandrikaEMPLOYEE

2 months ago

Amazing! Glad this helped!

Status changed to Awaiting User Response railway[bot] • 2 months ago

Status changed to Solved chandrika • 2 months ago