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xamarin git pull nuget package error

I am new in Xamarin android development.
I take the code pull from git.
After that i opened my solution in visual studio.
I cleaned the solution - now it is fine.
then i trying to build the solution it is showing the error.
>Restoring NuGet packages...
To prevent NuGet from restoring packages during build, open the Visual Studio Options dialog, click on the Package Manager node and uncheck 'Allow NuGet to download missing packages during build.'
NuGet Package restore failed for project app: Unable to find version '2.0.0' of package 'FastAndroidCamera'.
C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\: Package 'FastAndroidCamera.2.0.0' is not found on source 'C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\'.
https://api.nuget.org/v3/index.json: Unable to load the service index for source https://api.nuget.org/v3/index.json.
An error occurred while sending the request.
The remote name could not be resolved: 'api.nuget.org'
1>------ Rebuild All started: Project: app, Configuration: Debug Any CPU ------
1>D:\PRANAV\TOLL\GIT\MobileApp-12-06-2018\MobileApp\app\app.csproj(467,5): error : This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is ..\packages\Xamarin.Build.Download.0.4.3\build\Xamarin.Build.Download.props.
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========\
This is the error that i am getting . So guys can you figure where i am doing the mistakes ?

According to the error message,
To prevent NuGet from restoring packages during build, open the Visual
Studio Options dialog, click on the Package Manager node and uncheck
'Allow NuGet to download missing packages during build.'
It seems the project use the older now deprecated NuGet package restore that is MSBuild based and runs NuGet.exe on every build. These messages are from NuGet.exe.
Check the similar issue here.
To resolve this issue, you should make sure to upgrade to the latest version of NuGet which does package restore automatically instead of MSBuild based NuGet package restore.
You're going to want to delete the NuGet targets (delete the .nuget folder and then manually edit your .csproj files and remove the lines that import the NuGet.targets file). This is no longer needed. Using the new way to restore nuget package, the NuGet packages will be automatically restored by Visual Studio just before the build.
See this post by David Ebbo for more information: http://blog.davidebbo.com/2014/01/the-right-way-to-restore-nuget-packages.html and the blog how to switch from "Enable Package Restore" to "Automatic Package Restore"
Hope this helps.

NuGet Local Package Not Found

I am currently in the process of upgrading from Entity Framework 4.0 to 5.0. In order to do this I am required to open the Visual Studio package manager and execute:
install-package entityframework -pre
The problem is, when I run this command I get the following error message:
The problem is, 'gmts-logger' is not a NuGet package, it is a local project, so I don't understand why NuGet has anything to do with it.
I'm stumped. How do I resolve this?

This error occurs when gmts-logger does not exist on the way provided in Reference path.
Try to do following steps:
Right click your project and choose Unload Project
After it's unloaded right click your solution and pick edit your project
find Reference for gmts-logger and correct path where it physically exists
Reload project and via NuGet Package manager install entityframework

I resolved the issue by navigating to each of my projects and removing all references to 'gmts-logger' from all of the 'packages.config' files.

Why all of my .Net project's references are gone?

I have created a web application project. While developing my application, I have installed some packages from NuGet and yet they still there in my project. But when I copy my project to another computer and try to run the project, there are many errors occurred because all references are marked with yellow alerts.
I open the project with file .sln
When I run the project, it generated a lot of error because it cannot find the libraries.
As Abhay Saraf's request, I provide the link to download .csproj section: http://www.hellomeo.net/Umbraco/EmployeeLeaveManagement.zip

First, you need to check the packages.config file in your project to confirm all packages are listed in this file. Then please check your Visual Studio settings (Tools -> Options -> NuGet Package Manager -> General), the options under Package Restore are all checked as below screenshot.
If above options are checked but the packages still not restore automatically, please use following ways to restore packages for entire solution.
Open Package Manager Console window from View -> Other Windows -> Package Manager Console.
Type command “Update-Package -reinstall” to reinstall all packages in your current solution which will based on the packages that listed in the packages.config file.

Right-click on one of the missing references, choose Properties and see what the Path is set to. Is the Path correct?

Run dnu restore from the Package Manager Console

Nuget Packages are missing in Visual Studio

I have been using xamarin studio, it works fine when I download a sample project from mvvmcross. It compiles and deploys the device perfectly.
But when I open the project in the visual studio, there are a lot of missing packages for some reasons. Is there a way of handling ? I am using Nuget 2.8 in Visual studio 2013
When I open Nuget as follows, there is a button to restore the missing packages. I clicked on it.
Then it is attempting to download the missing packages, and then it realizes there are dependencies as follows:
Then I am attempting to download the dependency manually as follows but it shows the packages has already downloaded but I am still seeing the missing packages in the solution, nothing is affected.
Therefore I am getting hundreds of errors as follows:
When I take a look at the property of missing packages, I see as follows

You should update your NuGet Package Manager extension in Visual Studio and then try restoring the packages again.
The restore error MvvmCross.Binding already has a dependency defined for MvvmCross.Core is caused by an old version of the NuGet package manager extension not recognising the newer target frameworks that the MvvmCross.Binding NuGet package is using in its group dependencies. This bug has been fixed in a newer version of the NuGet Package Manager.
If you search for the 'already has a dependency defined' error message you will find several cases of this, such as this StackOverflow question, for example:
Can not install NuGet package

Right click on the solution in solution explorer and choose 'restore nuget packages'

Can't build solution because of missing NuGet references

Like title says, I can not build my solution(C#) as NuGet is spitting out this error
This project references NuGet package(s) that are missing on this
computer. Use NuGet Package Restore to download them. For more
information, see http://go.microsoft.com/fwlink/?LinkID=322105. The
missing file is ..\packages\Fody.1.26.1\build\Fody.targets.
When I run Get-Package, it says no packages are installed.
How do I get rid of this(I have no need for the package anymore).
Thanks

You don't want to use the project based nuget package restore!
Make sure you have the latest Nuget version (Tools -> Extensions and Updates)
When you go to build the project it should tell you it needs to download the nuget packages (or might just auto download them).
Edit not sure whats with the downvotes:
http://blog.davidebbo.com/2014/01/the-right-way-to-restore-nuget-packages.html
To find the menu item: "enable nuget package restore" right-click in the solution explorer on the solution - not on the project.
You get a message:
Do you want to configure this solution to download and
restore missing NuGet packages during build?

Press Ctrl+Q then type "Package Manager Console", This will bring up a console like interface.
Type in
Uninstall-Package Fody
and press enter will remove this package for you