I had this app running for over a year on an IIS server and suddenly after a deploy (after a year) the server started to fail with the following message:
HTTP Error 500.30 - ASP.NET Core app failed to start
I checked the logs under Event Viewer > Windows Logs > Application > .NET Runtime and it says:
Application: w3wp.exe
CoreCLR Version: 5.0.521.16609
.NET Version: 5.0.5
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.FileNotFoundException: Could not load file or assembly 'Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed'. The system cannot find the file specified.
File name: 'Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed'
at SelectWiseAPI.Extensions.ObjectExtension.ToJsonIndented(Object obj)
at SelectWiseAPI.Startup.ConfigureServices(IServiceCollection services) in C:\inetpub\wwwroot\selectwise-api\SelectWiseAPI\Startup.cs:line 40
...
I don't have any references to 13.0.0.0, my packages are 13.0.1.
Why is it trying to look for a different version? How can I fix this or find more information about it?