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"linkAssemblies" task failed unexpectedly. Failed to resolve System.String SQLitePCL.raw::sqlite3_column_name(SQLitePCL.sqlite3_stmt,System.Int32)

I am trying to debug xamarin forms project - project builds successfully, but fails with error when trying to run it.
Severity Code Description Project File Line Suppression State
Error MSB4018: The "LinkAssemblies" task failed unexpectedly.
Mono.Linker.MarkException: Error processing method: 'Newtonsoft.Json.Linq.JObject Microsoft.WindowsAzure.MobileServices.SQLiteStore.MobileServiceSQLiteStore::ReadRow(Microsoft.WindowsAzure.MobileServices.SQLiteStore.TableDefinition,SQLitePCL.sqlite3_stmt)' in assembly: 'Microsoft.Azure.Mobile.Client.SQLiteStore.dll' ---> Mono.Cecil.ResolutionException: Failed to resolve System.String SQLitePCL.raw::sqlite3_column_name(SQLitePCL.sqlite3_stmt,System.Int32)
at Mono.Linker.Steps.MarkStep.HandleUnresolvedMethod(MethodReference reference)
at Mono.Linker.Steps.MarkStep.MarkMethod(MethodReference reference)
at Mono.Linker.Steps.MarkStep.MarkInstruction(Instruction instruction)
at Mono.Linker.Steps.MarkStep.MarkMethodBody(MethodBody body)
at Mono.Linker.Steps.MarkStep.ProcessMethod(MethodDefinition method)
at Mono.Linker.Steps.MarkStep.ProcessQueue()
--- End of inner exception stack trace ---
at Mono.Linker.Steps.MarkStep.ProcessQueue()
at Mono.Linker.Steps.MarkStep.ProcessPrimaryQueue()
at Mono.Linker.Steps.MarkStep.Process()
at MonoDroid.Tuner.MonoDroidMarkStep.Process(LinkContext context)
at Mono.Linker.Pipeline.ProcessStep(LinkContext context, IStep step)
at Mono.Linker.Pipeline.Process(LinkContext context)
at MonoDroid.Tuner.Linker.Process(LinkerOptions options, ILogger logger, LinkContext& context)
at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
at Xamarin.Android.Tasks.LinkAssemblies.Execute()
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext() 0

EF 6.13 add-migration throw exception on VS2017, Microsoft.Build.Framework

I get this error when i typing add migration. The ApplicationDbContext exists in another project while migration file exist in the web application project.
If I remember right it has worked before but now it stopped to work.
I have tried restart visual studio, run it as administrator. reinstall EF 6.11, 6.13 and 6.20.
Visual Studio Version 15.8.5, Build Tool 15.1
The migration exists in the startup project and the package manager is also set on the startup project.
I have even tried to repair Visual Studio and after I also tried uninstall and then install but nothing works.
I tried the the solution where I edit devenv.exe.config which did not work
https://github.com/aspnet/EntityFramework6/issues/382
add-migration AddedUserFax
System.TypeInitializationException: The type initializer for 'Company.SoftwareX.Contexts.ApplicationDbContext' threw an exception. ---> System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.Build.Framework, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
at Company.SoftwareX.Database.Contexts.ApplicationDbContext..cctor()
--- End of inner exception stack trace ---
at Company.SoftwareX.Database.Contexts.ApplicationDbContext..ctor() in C:\Projects\Visual Studio\Project\Company.SoftwareX.Database\ApplicationDbContext.cs:line 110
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Data.Entity.Infrastructure.DbContextInfo.CreateInstance()
at System.Data.Entity.Infrastructure.DbContextInfo..ctor(Type contextType, DbProviderInfo modelProviderInfo, AppConfig config, DbConnectionInfo connectionInfo, Func`1 resolver)
at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration, DbContext usersContext, DatabaseExistenceState existenceState, Boolean calledByCreateDatabase)
at System.Data.Entity.Migrations.DbMigrator..ctor(DbMigrationsConfiguration configuration)
at System.Data.Entity.Migrations.Design.MigrationScaffolder..ctor(DbMigrationsConfiguration migrationsConfiguration)
at System.Data.Entity.Migrations.Design.ToolingFacade.ScaffoldRunner.Run()
at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
at System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner)
at System.Data.Entity.Migrations.Design.ToolingFacade.Scaffold(String migrationName, String language, String rootNamespace, Boolean ignoreChanges)
at System.Data.Entity.Migrations.AddMigrationCommand.Execute(String name, Boolean force, Boolean ignoreChanges)
at System.Data.Entity.Migrations.AddMigrationCommand.<>c__DisplayClass2.<.ctor>b__0()
at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)
The type initializer for 'Company.SoftwareX.Database.Contexts.ApplicationDbContext' threw an exception.

The answer to this question is to not have a static constructor in the DbContext or other static methods in constructor that is required to run before a new instance is created.
The big clue is in the stack-trace, System.TypeInitializationException: The type initializer for... This indicates that static properties/constructors (that, by contract, must run before any instances can be new-ed up) have thrown errors.
- Spender

Java.Interop.Tools.Diagnostics.XamarinAndroidException: error XA2006

I'm trying to release a Xamarin.Forms application, but when I change to release in the configuration for the Android project and build I get the following error:
Java.Interop.Tools.Diagnostics.XamarinAndroidException: error XA2006: Could not resolve reference to 'System.Int32 Xamarin.Forms.Platform.Resource/String::ApplicationName' (defined in assembly 'Syncfusion.SfChart.XForms.Android, Version=13.2451.0.29, Culture=neutral, PublicKeyToken=null') with scope 'Xamarin.Forms.Platform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. When the scope is different from the defining assembly, it usually means that the type is forwarded. ---> Mono.Cecil.ResolutionException: Failed to resolve System.Int32 Xamarin.Forms.Platform.Resource/String::ApplicationName
at Mono.Linker.Steps.MarkStep.MarkField(FieldReference reference)
at Mono.Linker.Steps.MarkStep.MarkInstruction(Instruction instruction)
at Mono.Linker.Steps.MarkStep.MarkMethodBody(MethodBody body)
at Mono.Linker.Steps.MarkStep.ProcessMethod(MethodDefinition method)
at Mono.Linker.Steps.MarkStep.ProcessQueue()
at Mono.Linker.Steps.MarkStep.Process()
at Mono.Linker.Steps.MarkStep.Process(LinkContext context)
at MonoDroid.Tuner.MonoDroidMarkStep.Process(LinkContext context)
at Mono.Linker.Pipeline.Process(LinkContext context)
at MonoDroid.Tuner.Linker.Process(LinkerOptions options, LinkContext& context)
at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
--- End of inner exception stack trace ---
at Java.Interop.Tools.Diagnostics.Diagnostic.Error(Int32 code, Exception innerException, String message, Object[] args)
at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
at Xamarin.Android.Tasks.LinkAssemblies.Execute()
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext() XamarinCRM.Android

The same error message occurred with me. I was able to solve it like this:
Right-click the Android Project > Properties > Android Options > Linker, and then choose the "None" option in the Linking property.

We suspect that there are some version conflicts between Syncfusion/Xamarin.Forms assemblies and we kindly request you to follow the below steps.
Update your Essential Studio for Xamarin to latest version (15.1.0.41) which can be downloaded from the following location.
Link: https://www.syncfusion.com/downloads/version-history/15_1_0_41
Update your Xamarin.Forms version to 2.3.3.180.
Please get back to us if you are still facing any issues.

Xamarin Traditional Android Project Build On Visual Studio 2017 But Have Error

I created xamarin traditinal android project 2-3 months ago but I need update this project but I'm getting an error;
Severity Code Description Project File Line Suppression State
Error The "LinkAssemblies" task failed unexpectedly.
Java.Interop.Tools.Diagnostics.XamarinAndroidException: error XA2006: Could not resolve reference to 'System.Void Android.App.Activity::OnMultiWindowModeChanged(System.Boolean)' (defined in assembly 'Xamarin.Android.Support.Fragment, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null') with scope 'Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=84e04ff9cfb79065'. When the scope is different from the defining assembly, it usually means that the type is forwarded. ---> Mono.Cecil.ResolutionException: Failed to resolve System.Void Android.App.Activity::OnMultiWindowModeChanged(System.Boolean)
at Mono.Linker.Steps.MarkStep.MarkMethod(MethodReference reference)
at Mono.Linker.Steps.MarkStep.MarkInstruction(Instruction instruction)
at Mono.Linker.Steps.MarkStep.MarkMethodBody(MethodBody body)
at Mono.Linker.Steps.MarkStep.ProcessMethod(MethodDefinition method)
at Mono.Linker.Steps.MarkStep.ProcessQueue()
at Mono.Linker.Steps.MarkStep.Process()
at Mono.Linker.Steps.MarkStep.Process(LinkContext context)
at MonoDroid.Tuner.MonoDroidMarkStep.Process(LinkContext context)
at Mono.Linker.Pipeline.Process(LinkContext context)
at MonoDroid.Tuner.Linker.Process(LinkerOptions options, LinkContext& context)
at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
--- End of inner exception stack trace ---
at Java.Interop.Tools.Diagnostics.Diagnostic.Error(Int32 code, Exception innerException, String message, Object[] args)
at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
at Xamarin.Android.Tasks.LinkAssemblies.Execute()
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext() MHG.SozumSana.UI

error XA2006: Could not resolve reference to 'System.Void Android.App.Activity::OnMultiWindowModeChanged(System.Boolean)' (defined in assembly 'Xamarin.Android.Support.Fragment, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null') with scope 'Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=84e04ff9cfb79065'.
Please check the onMultiWindowModeChanged API, it is added in API level 24. As #MCZ suggested, this is a known issue.
You can try to change the settings like this:
Besides, Android 7.0 needs Android JDK 1.8, I think you may have installed it since you can build your app earlier, please check the Java Development Kit Location in Tools -> Options-> Xamarin of your VS2017.

While using visual studio check linker property it mostly set to "None" that you have to change it.
And check TargetAndroidVersion. (In the config GUI, this is entitled "Compile using Android version:")

Could not load file or assembly [System.EnterpriseServices.Wrapper.dll]

I'm using Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.276; Windows 2k3.
After reset IIS some days. This error occurs again.
I did not find a complete solution for below error:
Not implemented (Exception from HRESULT: 0x80004001 (E_NOTIMPL))
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NotImplementedException: Not implemented (Exception from HRESULT: 0x80004001 (E_NOTIMPL))
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[NotImplementedException: Not implemented (Exception from HRESULT: 0x80004001 (E_NOTIMPL))]
[FileLoadException: Could not load file or assembly 'System.EnterpriseServices.Wrapper.dll' or one of its dependencies. Not implemented (Exception from HRESULT: 0x80004001 (E_NOTIMPL))]
System.Lazy`1.get_Value() +9587987
Microsoft.Owin.Host.SystemWeb.OwinHttpModule.Init(HttpApplication context) +43
System.Web.HttpApplication.InitModulesCommon() +172
System.Web.HttpApplication.InitModules() +43
System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers) +828
System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context) +304
System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context) +107
System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +327
Please let me know a complete solution.
Thank you.

while running the project from visual studio force the platform target as 32 bit using following steps:
->Right click on Project
->Select Properties
->Goto Build Options
->Change "Platform Target" from "ANY CPU" to "X86"
now run the Project.