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[E 19:33:53.450 NotebookApp] Failed to load kernel spec: 'fsharp'
    Traceback (most recent call last):
      File "C:\Anaconda\lib\site-packages\notebook\services\kernelspecs\handlers.py", line 59, in get
        d = kernelspec_model(self, kernel_name)
      File "C:\Anaconda\lib\site-packages\notebook\services\kernelspecs\handlers.py", line 22, in kernelspec_model
        spec = ksm.get_kernel_spec(name)
      File "C:\Anaconda\lib\site-packages\jupyter_client\kernelspec.py", line 155, in get_kernel_spec
        return KernelSpec.from_resource_dir(resource_dir)
      File "C:\Anaconda\lib\site-packages\jupyter_client\kernelspec.py", line 38, in from_resource_dir
        kernel_dict = json.load(f)
      File "C:\Anaconda\lib\json\__init__.py", line 290, in load
        **kw)
      File "C:\Anaconda\lib\json\__init__.py", line 338, in loads
        return _default_decoder.decode(s)
      File "C:\Anaconda\lib\json\decoder.py", line 366, in decode
        obj, end = self.raw_decode(s, idx=_w(s, 0).end())
      File "C:\Anaconda\lib\json\decoder.py", line 382, in raw_decode
        obj, end = self.scan_once(s, idx)
    ValueError: Invalid \escape: line 3 column 16 (char 69)

[W 20:12:53.500 NotebookApp] Timeout waiting for kernel_info reply from a08a00ea-8ff2-4fd0-bec5-40f6553da4bc

Unhandled Exception: System.TypeInitializationException: The type initializer for '<StartupCode$IfSharp>.$Evaluation' threw an exception. ---> System.Exception: Error creating evaluation session: System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Build.Framework, Version=12.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
File name: 'Microsoft.Build.Framework, Version=12.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
   at Microsoft.FSharp.Compiler.MSBuildResolver.ResolveCore$cont@266(String targetProcessorArchitecture, String targetFrameworkVersion, FSharpList`1 targetFrameworkDirectories, ResolutionEnvironment resolutionEnvironment, Tuple`2[] references, String outputDirectory, FSharpFunc`2 logWarning, FSharpFunc`2 logMessage, FSharpFunc`2 logError, String implicitIncludeDir, String fsharpCoreExplicitDirOrFSharpBinariesDir, String frameworkRegistryBase, FSharpList`1 explicitIncludeDirs, String assemblyFoldersSuffix, String assemblyFoldersConditions, Boolean allowRawFileName, Unit unitVar)
   at Microsoft.FSharp.Compiler.MSBuildResolver.ResolveCore(ResolutionEnvironment resolutionEnvironment, Tuple`2[] references, String targetFrameworkVersion, FSharpList`1 targetFrameworkDirectories, String targetProcessorArchitecture, String outputDirectory, String fsharpCoreExplicitDirOrFSharpBinariesDir, FSharpList`1 explicitIncludeDirs, String implicitIncludeDir, String frameworkRegistryBase, String assemblyFoldersSuffix, String assemblyFoldersConditions, Boolean allowRawFileName, FSharpFunc`2 logMessage, FSharpFunc`2 logWarning, FSharpFunc`2 logError) in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\ReferenceResolution.fs:line 266
   at Microsoft.FSharp.Compiler.MSBuildResolver.Resolve(ResolutionEnvironment resolutionEnvironment, IEnumerable`1 references, String targetFrameworkVersion, FSharpList`1 targetFrameworkDirectories, String targetProcessorArchitecture, String outputDirectory, String fsharpCoreExplicitDirOrFSharpBinariesDir, FSharpList`1 explicitIncludeDirs, String implicitIncludeDir, String frameworkRegistryBase, String assemblyFoldersSuffix, String assemblyFoldersConditions, FSharpFunc`2 logMessage, FSharpFunc`2 logWarning, FSharpFunc`2 logError) in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\ReferenceResolution.fs:line 414
   at Microsoft.FSharp.Compiler.CompileOps.Resolve@2949-2(TcConfig tcConfig, ResolveAssemblyReferenceMode mode, range errorAndWarningRange, String targetFrameworkMajorMinor, String targetProcessorArchitecture, String outputDirectory, FSharpList`1 targetFrameworkDirectories, IEnumerable`1 references, Boolean showMessages) in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\CompileOps.fs:line 2966
   at Microsoft.FSharp.Compiler.CompileOps.TcConfig.TryResolveLibsUsingMSBuildRules(TcConfig tcConfig, FSharpList`1 originalReferences, range errorAndWarningRange, ResolveAssemblyReferenceMode mode) in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\CompileOps.fs:line 2975
   at Microsoft.FSharp.Compiler.CompileOps.TcAssemblyResolutions.Resolve(TcConfig tcConfig, FSharpList`1 assemblyList, FSharpList`1 knownUnresolved) in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\CompileOps.fs:line 3391
   at Microsoft.FSharp.Compiler.CompileOps.TcAssemblyResolutions.SplitNonFoundationalResolutions(TcConfig tcConfig) in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\CompileOps.fs:line 3417
   at Microsoft.FSharp.Compiler.IncrementalFSharpBuild.GetFrameworkTcImports(TcConfig tcConfig) in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\vs\IncrementalBuild.fs:line 1095
   at Microsoft.FSharp.Compiler.Interactive.Shell.FsiEvaluationSession..ctor(FsiEvaluationSessionHostConfig fsi, String[] argv, TextReader inReader, TextWriter outWriter, TextWriter errorWriter, Boolean fsiCollectible) in C:\GitHub\fsharp\FSharp.Compiler.Service\src\fsharp\fsi\fsi.fs:line 2363