I tried to open the PWA server or SP central administration, I get this error
The namespace Resources already contains a definition for PWA
Server Error in '/' Application.
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0101: The namespace 'Resources' already contains a definition for 'PWA'
Source File: c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\e02b2b34\ef2a2f4d\App_GlobalResources.jn2ibtll.3.cs Line: 11
Show Detailed Compiler Output:
Microsoft (R) Visual C# Compiler version 4.7.3062.0 for C# 5 Copyright (C) Microsoft Corporation. All rights reserved.
This compiler is provided as part of the Microsoft (R) .NET Framework, but only supports language versions up to C# 5, which is no longer the latest version. For compilers that support newer versions of the C# programming language, see http://go.microsoft.com/fwlink/?LinkID=533240
Temporary ASP.NET Files\root\e02b2b34\ef2a2f4d\App_GlobalResources.jn2ibtll.3.cs(11,21): error CS0101:
The namespace 'Resources' already contains a definition for 'PWA'