Description
System information
- OS version/distro: Windows 10
- .NET Version (eg., dotnet --info): .Net Standard 2.0
- ML.Net version: 1.4
Issue
- What did you do?
Build and trained a model with FastTree, saved it and finally load it and all worked. Changed to LightGBM and got an error when I try to load it.
The error is following:
InvalidOperationException: Can't load type Microsoft.ML.IPredictorProducing`1[System.Single], because it has both create and constructor methods with the same visibility. Please indicate which one should be used by changing either the signature or the visibility of one of them.
Source code / logs
InvalidOperationException: Can't load type Microsoft.ML.IPredictorProducing`1[System.Single], because it has both create and constructor methods with the same visibility. Please indicate which one should be used by changing either the signature or the visibility of one of them.
System.InvalidOperationException
HResult=0x80131509
Message=Error during class instantiation
Source=Microsoft.ML.Core
StackTrace:
at Microsoft.ML.Runtime.ComponentCatalog.LoadableClassInfo.CreateInstanceCore(Object[] ctorArgs)
at Microsoft.ML.Runtime.ComponentCatalog.TryCreateInstance[TRes](IHostEnvironment env, Type signatureType, TRes& result, String name, String options, Object[] extra)
at Microsoft.ML.Runtime.ComponentCatalog.TryCreateInstance[TRes,TSig](IHostEnvironment env, TRes& result, String name, String options, Object[] extra)
at Microsoft.ML.ModelLoadContext.TryLoadModelCore[TRes,TSig](IHostEnvironment env, TRes& result, Object[] extra)
at Microsoft.ML.ModelLoadContext.TryLoadModel[TRes,TSig](IHostEnvironment env, TRes& result, RepositoryReader rep, Entry ent, String dir, Object[] extra)
at Microsoft.ML.ModelLoadContext.LoadModel[TRes,TSig](IHostEnvironment env, TRes& result, RepositoryReader rep, Entry ent, String dir, Object[] extra)
at Microsoft.ML.ModelLoadContext.LoadModelOrNull[TRes,TSig](IHostEnvironment env, TRes& result, RepositoryReader rep, String dir, Object[] extra)
at Microsoft.ML.ModelLoadContext.LoadModel[TRes,TSig](IHostEnvironment env, TRes& result, RepositoryReader rep, String dir, Object[] extra)
at Microsoft.ML.ModelOperationsCatalog.Load(Stream stream, DataViewSchema& inputSchema)
at Microsoft.ML.ModelOperationsCatalog.Load(String filePath, DataViewSchema& inputSchema)
This exception was originally thrown at this call stack:
Microsoft.ML.Runtime.ComponentCatalog.TryGetIniters(System.Type, System.Type, System.Type[], out System.Reflection.MethodInfo, out System.Reflection.ConstructorInfo, out System.Reflection.MethodInfo, out bool)
Microsoft.ML.Runtime.ComponentCatalog.RegisterAssembly(System.Reflection.Assembly, bool)
Microsoft.ML.ModelLoadContext.EnsureLoaderAssemblyIsRegistered(Microsoft.ML.Runtime.ComponentCatalog)
Microsoft.ML.ModelLoadContext.TryLoadModelCore<TRes, TSig>(Microsoft.ML.Runtime.IHostEnvironment, out TRes, object[])
Microsoft.ML.ModelLoadContext.TryLoadModel<TRes, TSig>(Microsoft.ML.Runtime.IHostEnvironment, out TRes, Microsoft.ML.RepositoryReader, Microsoft.ML.Repository.Entry, string, object[])
Microsoft.ML.ModelLoadContext.LoadModel<TRes, TSig>(Microsoft.ML.Runtime.IHostEnvironment, out TRes, Microsoft.ML.RepositoryReader, Microsoft.ML.Repository.Entry, string, object[])
Microsoft.ML.ModelLoadContext.LoadModelOrNull<TRes, TSig>(Microsoft.ML.Runtime.IHostEnvironment, out TRes, Microsoft.ML.RepositoryReader, string, object[])
Inner Exception 1:
TargetInvocationException: Exception has been thrown by the target of an invocation.
Inner Exception 2:
InvalidOperationException: Error during class instantiation
Inner Exception 3:
TargetInvocationException: Exception has been thrown by the target of an invocation.
Inner Exception 4:
InvalidOperationException: Error during class instantiation
Inner Exception 5:
TargetInvocationException: Exception has been thrown by the target of an invocation.
Inner Exception 6:
InvalidOperationException: Can't load type Microsoft.ML.IPredictorProducing`1[System.Single], because it has both create and constructor methods with the same visibility. Please indicate which one should be used by changing either the signature or the visibility of one of them.