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Azure deployment fails with build errors

I have been trying to deploy my web application to azure for two days now. I had finished programming the application and its working properly locally, when i pushed to application to github, and I'm using my student starter plan to deploy it. The application starts deploying then it fails with errors. The errors are below
/usr/share/dotnet/sdk/3.0.100/Microsoft.Common.CurrentVersion.targets(2106,5): warning MSB3245: Could not resolve this reference. Could not locate the assembly "Microsoft.Extensions.Identity.Stores". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors. [/home/vsts/work/1/s/SchoolManager.Models/SchoolManager.Models.csproj]
Administration/SchoolRole.cs(1,17): error CS0234: The type or namespace name 'AspNetCore' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?) [/home/vsts/work/1/s/SchoolManager.Models/SchoolManager.Models.csproj]
Administration/SchoolUser.cs(1,17): error CS0234: The type or namespace name 'AspNetCore' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?) [/home/vsts/work/1/s/SchoolManager.Models/SchoolManager.Models.csproj]
Tenancy/TenancyRole.cs(1,17): error CS0234: The type or namespace name 'AspNetCore' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?) [/home/vsts/work/1/s/SchoolManager.Models/SchoolManager.Models.csproj]
Tenancy/TenancyUser.cs(2,17): error CS0234: The type or namespace name 'AspNetCore' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?) [/home/vsts/work/1/s/SchoolManager.Models/SchoolManager.Models.csproj]
Administration/SchoolRole.cs(5,31): error CS0246: The type or namespace name 'IdentityRole<>' could not be found (are you missing a using directive or an assembly reference?) [/home/vsts/work/1/s/SchoolManager.Models/SchoolManager.Models.csproj]
Administration/SchoolUser.cs(7,31): error CS0246: The type or namespace name 'IdentityUser' could not be found (are you missing a using directive or an assembly reference?) [/home/vsts/work/1/s/SchoolManager.Models/SchoolManager.Models.csproj]
Tenancy/TenancyRole.cs(5,32): error CS0246: The type or namespace name 'IdentityRole<>' could not be found (are you missing a using directive or an assembly reference?) [/home/vsts/work/1/s/SchoolManager.Models/SchoolManager.Models.csproj]
Tenancy/TenancyUser.cs(7,32): error CS0246: The type or namespace name 'IdentityUser' could not be found (are you missing a using directive or an assembly reference?) [/home/vsts/work/1/s/SchoolManager.Models/SchoolManager.Models.csproj]
1 Warning(s)
8 Error(s)
I had even changed the host now to Azure DevOps but it still show me the same thing. This has pushed me to rewrite the application from start. It runs locally okay but when i publish it, it fails.

I too faced the same issue. While publishing VS build was failing with - Unable to find dependent project references, but with release version I was able to build the solution.
The fix which worked for me was -
Update VS version to Version 16.7.3.
With this version project build passed successfully and I was able to deploy the packages...in earlier version I think there was a problem with dependency resolver.

Setup build system for ASP.NET MVC application without visual studio

How to setup build system without visual stduio for .NET MVC web application?
Actually i have installed the following items on build server,
Latest .NET framework
Microsoft Visual Studio shell (isolated)
MSBuild tools
Visual Studio C++ build tools & Web Deployment build tools
Latest WiX Toolset
while running build getting the following errors,
Errors:
error CS0234: The type or namespace name 'Mvc' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
error CS0246: The type or namespace name 'HttpConfiguration' could not be found (are you missing a using directive or an assembly
reference?)
error CS0234: The type or namespace name 'Http' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
error CS0246: The type or namespace name 'ApiController' could not be found (are you missing a using directive or an assembly reference?)
error CS0246: The type or namespace name 'ActionFilterAttribute' could not be found (are you missing a using directive or an assembly
reference?)
error CS0641: Attribute 'AttributeUsage' is only valid on classes derived from System.Attribute
error CS0246: The type or namespace name 'HttpActionExecutedContext' could not be found (are you missing a
using directive or an assembly reference?)
rror CS0246: The type or namespace name 'HttpPost' could not be found (are you missing a using directive or an assembly reference?)
Did i miss anything to be installed on the Build System prior to start build?
Guide me to over come these errors.
Update:
I resolved the above errors by installing MVC4 framework. But i am still having other below issue for VP8 & WebM projects.
error MSB4019: The imported project "C:\Microsoft.Cpp.Default.props"
was not found. Confirm that the path in the declaration is
correct, and that the file exists on disk.

.NET framework System.Windows.Form on non Windows OS

So, I MUST use C# for a uni course, just like I MUST use MSSQL Server, the big problem is that I'm running Ubuntu. I followed this guide, I mean it's from microsoft right? Can't get any of System.Windows.Form working, neither SqlDataAdapter and many more(like 99.65% of the libraries).
Anyone encountered this issue before? Or you just created a VM and waited a week for Visual to install?
This is what I get when I run dotnet run
Program.cs(4,22): error CS0234: The type or namespace name 'Forms' does not exist in the namespace 'System.Windows' (are you missing an assembly reference?) [/home/potra/Desktop/School/School/DBMS/Test/Test.csproj]
Program.cs(8,28): error CS0246: The type or namespace name 'Form' could not be found (are you missing a using directive or an assembly reference?) [/home/potra/Desktop/School/School/DBMS/Test/Test.csproj]
Program.cs(10,17): error CS0246: The type or namespace name 'DataGridView' could not be found (are you missing a using directive or an assembly reference?) [/home/potra/Desktop/School/School/DBMS/Test/Test.csproj]
Program.cs(11,17): error CS0246: The type or namespace name 'DataGridView' could not be found (are you missing a using directive or an assembly reference?) [/home/potra/Desktop/School/School/DBMS/Test/Test.csproj]
Program.cs(12,17): error CS0246: The type or namespace name 'SqlDataAdapter' could not be found (are you missing a using directive or an assembly reference?) [/home/potra/Desktop/School/School/DBMS/Test/Test.csproj]
The build failed. Please fix the build errors and run again.

The latest .NET Core, 2.1 Preview 2, does not include System.Windows.Forms.
If you'd like to use a native Ubuntu runtime, Mono supports WinForms and SqlClient.
For more information, the .NET documentation explains how .NET is implemented.

SignedCms alternative in .NET Core

Does an alternative to System.Security.Cryptography.Pkcs.SignedCms class exist in .NET Core? Or do I have to dig into BouncyCastle, like they do in WinRT case? Is there an alternative of SignedCMS in WinRT?

FYI in case it helps. It seems that support for SignedCms and other essential .NET classes for S/MIME are available via this NUGET package:
System.Security.Cryptography.Pkcs
I.e. before I added this NUGET package to my Visual Studio 2017 (VS2017) .NET Core project, I received these compilation errors:
Severity Code Description Project File Line Suppression State
Error CS0246 The type or namespace name 'CmsRecipientCollection' could not be found (are you missing a using directive or an assembly reference?)
Error CS0246 The type or namespace name 'X509IssuerSerial' could not be found (are you missing a using directive or an assembly reference?)
Error CS0246 The type or namespace name 'EnvelopedCms' could not be found (are you missing a using directive or an assembly reference?)
Error CS0246 The type or namespace name 'SignedCms' could not be found (are you missing a using directive or an assembly reference?)
Error CS0246 The type or namespace name 'SignerInfoCollection' could not be found (are you missing a using directive or an assembly reference?)
Error CS0246 The type or namespace name 'ContentInfo' could not be found (are you missing a using directive or an assembly reference?)
Error CS0246 The type or namespace name 'CmsRecipient' could not be found (are you missing a using directive or an assembly reference?)
Error CS0246 The type or namespace name 'RecipientInfo' could not be found (are you missing a using directive or an assembly reference?)
Error CS0103 The name 'SubjectIdentifierType' does not exist in the current context
Error CS0246 The type or namespace name 'SignerInfo' could not be found (are you missing a using directive or an assembly reference?)
Error CS1579 foreach statement cannot operate on variables of type 'SignerInfoCollection' because 'SignerInfoCollection' does not contain a public instance definition for 'GetEnumerator'
Error CS0246 The type or namespace name 'CmsSigner' could not be found (are you missing a using directive or an assembly reference?)
After I added the NUGET package, I could compile successfully.

No, there's no equivalent to SignedCms in .NET Core at this time.
You're quite welcome to create an issue on https://github.com/dotnet/corefx/issues to indicate that it's a type that you would like to be brought over.

The type or namespace name 'AForge' could not be found (are you missing a using directive or an assembly reference?)

i am working on a website in which i used Aforge.Math.dll file.
it is working perfectly on localhost but when i upload it on server. It Gives me Following Error:-
The type or namespace name 'AForge' could not be found (are you missing a using directive or an assembly reference?)
Can Anybody tell me what is the problem???
Thanks in advance....