title: Xamarin-IOS build error - Could not link assemblies. Error while processing reference of the project
body: <p>I've found very strange problem in our project.
  We at office are working from different MAC computers, on same project.</p>
  
  <p>I have build error on my project but my workmate doesn't. </p>
  
  <p>This is the error I have</p>
  
  <p><a href="https://i.stack.imgur.com/NbLpC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NbLpC.png" alt="enter image description here"></a></p>
  
  <p>And full <strong>Build Output</strong> is this</p>
  
  <pre><code> Module: EuroProduct.SharedPCL.dll
  
      No compiled resources. Skipping writing assembly.
  Target _CopyFilesMarkedCopyLocal:
      Touching "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/obj/Debug/netstandard2.0/EuroProduct.SharedPCL.csproj.CopyComplete".
  Target GetCopyToOutputDirectoryItems:
      __________________________________________________
      Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/EuroProduct.SharedPCL.csproj" is building "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.TransferModels/EuroProduct.TransferModels.csproj" (GetCopyToOutputDirectoryItems target(s)):
  
      __________________________________________________
      Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/EuroProduct.SharedPCL.csproj" is building "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/SharedAbstractions/SharedAbstractions.csproj" (GetCopyToOutputDirectoryItems target(s)):
  
  Target GenerateBuildDependencyFile:
    Skipping target "GenerateBuildDependencyFile" because all output files are up-to-date with respect to the input files.
  Target CopyFilesToOutputDirectory:
      EuroProduct.SharedPCL -&gt; /Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/bin/Debug/netstandard2.0/EuroProduct.SharedPCL.dll
  
  Done building project "EuroProduct.SharedPCL.csproj".
  __________________________________________________
  Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/EuroProduct.IOS.csproj" (Build target(s)):
  
  Target _BeforeCoreCompileInterfaceDefinitions:
    Skipping target "_BeforeCoreCompileInterfaceDefinitions" because all output files are up-to-date with respect to the input files.
  Target _CoreCompileInterfaceDefinitions:
    Skipping target "_CoreCompileInterfaceDefinitions" because all output files are up-to-date with respect to the input files.
  Target _BeforeCoreCompileImageAssets:
    Skipping target "_BeforeCoreCompileImageAssets" because all output files are up-to-date with respect to the input files.
  Target _CoreCompileImageAssets:
    Skipping target "_CoreCompileImageAssets" because all output files are up-to-date with respect to the input files.
  Target _CoreCompileColladaAssets:
    Skipping target "_CoreCompileColladaAssets" because it has no inputs.
  Target _BeforeCoreCompileSceneKitAssets:
    Skipping target "_BeforeCoreCompileSceneKitAssets" because it has no inputs.
  Target _BeforeCoreCompileSceneKitAssets:
    Skipping target "_BeforeCoreCompileSceneKitAssets" because it has no inputs.
  Target _BeforeCoreCompileSceneKitAssets:
    Skipping target "_BeforeCoreCompileSceneKitAssets" because it has no inputs.
  Target _CoreCompileSceneKitAssets:
    Skipping target "_CoreCompileSceneKitAssets" because it has no inputs.
  Target _BeforeCompileTextureAtlases:
    Skipping target "_BeforeCompileTextureAtlases" because it has no inputs.
  Target _BeforeCompileTextureAtlases:
    Skipping target "_BeforeCompileTextureAtlases" because it has no inputs.
  Target _BeforeCompileTextureAtlases:
    Skipping target "_BeforeCompileTextureAtlases" because it has no inputs.
  Target _CoreCompileTextureAtlases:
    Skipping target "_CoreCompileTextureAtlases" because it has no inputs.
  Target _BeforeCompileCoreMLModels:
    Skipping target "_BeforeCompileCoreMLModels" because all output files are up-to-date with respect to the input files.
  Target _CoreCompileCoreMLModels:
    Skipping target "_CoreCompileCoreMLModels" because all output files are up-to-date with respect to the input files.
  Target _CoreOptimizePngImages:
    Skipping target "_CoreOptimizePngImages" because all output files are up-to-date with respect to the input files.
  Target _CoreOptimizePropertyLists:
    Skipping target "_CoreOptimizePropertyLists" because it has no inputs.
  Target _CoreOptimizeLocalizationFiles:
    Skipping target "_CoreOptimizeLocalizationFiles" because it has no inputs.
  Target _GetProjectReferenceTargetFrameworkProperties:
      __________________________________________________
      Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/EuroProduct.IOS.csproj" is building "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/EuroProduct.SharedPCL.csproj" (GetTargetFrameworks target(s)):
  
      __________________________________________________
      Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/EuroProduct.IOS.csproj" is building "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/SharedAbstractions/SharedAbstractions.csproj" (GetTargetFrameworks target(s)):
  
  Target ResolveProjectReferences:
      __________________________________________________
      Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/EuroProduct.IOS.csproj" is building "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/EuroProduct.SharedPCL.csproj" (GetTargetPath target(s)):
  
      __________________________________________________
      Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/EuroProduct.IOS.csproj" is building "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/SharedAbstractions/SharedAbstractions.csproj" (GetTargetPath target(s)):
  
      __________________________________________________
      Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/EuroProduct.IOS.csproj" is building "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/EuroProduct.SharedPCL.csproj" (GetNativeManifest target(s)):
  
      __________________________________________________
      Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/EuroProduct.IOS.csproj" is building "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/SharedAbstractions/SharedAbstractions.csproj" (GetNativeManifest target(s)):
  
  Target GenerateTargetFrameworkMonikerAttribute:
    Skipping target "GenerateTargetFrameworkMonikerAttribute" because all output files are up-to-date with respect to the input files.
  Target CoreCompile:
    Skipping target "CoreCompile" because all output files are up-to-date with respect to the input files.
  Target _CopyFilesMarkedCopyLocal:
      Touching "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/obj/iPhoneSimulator/Debug/EuroProduct.IOS.csproj.CopyComplete".
  Target GetCopyToOutputDirectoryItems:
      __________________________________________________
      Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/EuroProduct.IOS.csproj" is building "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/EuroProduct.SharedPCL.csproj" (GetCopyToOutputDirectoryItems target(s)):
  
      __________________________________________________
      Project "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/EuroProduct.IOS.csproj" is building "/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/SharedAbstractions/SharedAbstractions.csproj" (GetCopyToOutputDirectoryItems target(s)):
  
  Target CopyFilesToOutputDirectory:
      EuroProduct.IOS -&gt; /Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/bin/iPhoneSimulator/Debug/EuroProduct.IOS.exe
  Target _DetectSigningIdentity:
      Detected signing identity:
        Bundle Id: com.mpdc.europroduct
        App Id: com.mpdc.europroduct
  Target _CopyResourcesToBundle:
    Skipping target "_CopyResourcesToBundle" because all output files are up-to-date with respect to the input files.
  Target _DetectDebugNetworkConfiguration:
        DebugIPAddresses: 127.0.0.1
  Target _CompileAppManifest:
    Skipping target "_CompileAppManifest" because all output files are up-to-date with respect to the input files.
  Target _ParseExtraMtouchArgs:
        NoSymbolStrip Output: true
        NoDSymUtil Output: false
  Target _CompileToNative:
      /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/bin/mtouch @/Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.IOS/obj/iPhoneSimulator/Debug/response-file.rsp 
      MTOUCH : error MT2001: Could not link assemblies. Reason: Error while processing references of 'EuroProduct.IOS, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'
  Done building target "_CompileToNative" in project "EuroProduct.IOS.csproj" -- FAILED.
  
  Done building project "EuroProduct.IOS.csproj" -- FAILED.
  
  Build FAILED.
  
  /Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/EuroProduct.SharedPCL.csproj : warning NU1701: Package 'Ideine.ModernHttpClient 3.2.2' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETStandard,Version=v2.0'. This package may not be fully compatible with your project.
  /Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/EuroProduct.SharedPCL.csproj : warning NU1701: Package 'Microsoft.Bcl 1.1.10' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETStandard,Version=v2.0'. This package may not be fully compatible with your project.
  /Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/EuroProduct.SharedPCL.csproj : warning NU1701: Package 'Microsoft.Net.Http 2.2.29' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETStandard,Version=v2.0'. This package may not be fully compatible with your project.
  /Users/tornikegomareli/Desktop/MPDCEuroProduct/EuroProduct-master/EuroProduct.SharedPCL/EuroProduct.SharedPCL.csproj : warning NU1701: Package 'MPDC.Container 1.0.6' was restored using '.NETFramework,Version=v4.6.1' instead of the project target framework '.NETStandard,Version=v2.0'. This package may not be fully compatible with your project.
  MTOUCH : error MT2001: Could not link assemblies. Reason: Error while processing references of 'EuroProduct.IOS, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'
      4 Warning(s)
      1 Error(s)
  
  Time Elapsed 00:00:03.58
  
  Build succeeded.
      0 Warning(s)
      0 Error(s)
  
  Time Elapsed 00:00:03.58
  
  ---------------------- Done ----------------------
  
  Build: 1 error, 4 warnings
  </code></pre>
  
  <p>I've searched many problems like this, on stack-overflow but could not find any solution to solve my problem.</p>
  
  <p>I deleted also some packages but no any help.
  But when I'm deleting <strong>Xamarin-FFImageLoading</strong> package
  it is building without any problem.
  FFMImageLoader version is 2.3.6, also updated at last version but nothing helped.</p>
  
  <p>Please give me advice, for what to do in this situation.</p>