Hello, I just recently learning .NET and Umbraco for a few months for our client project. Currently try to do a minor upgrade from Umbraco 8.11.1 to latest version Umbraco 8.18.7 using manual upgrade (zip file) in a dummy project.
I follow the instruction from the documentation on minor upgrade for Umbraco 8 but got a server error when running the project instead of getting installer. Any suggestions how to solve it?
The documentation link: Minor upgrades for Umbraco 8 | Umbraco CMS
Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.]
Umbraco.Web.Runtime.WebRuntime.Boot(IRegister register) in D:\a\1\s\src\Umbraco.Web\Runtime\WebRuntime.cs:55
Umbraco.Web.UmbracoApplicationBase.HandleApplicationStart(Object sender, EventArgs evargs) in D:\a\1\s\src\Umbraco.Web\UmbracoApplicationBase.cs:65
Umbraco.Web.UmbracoApplicationBase.Application_Start(Object sender, EventArgs evargs) in D:\a\1\s\src\Umbraco.Web\UmbracoApplicationBase.cs:74
[HttpException (0x80004005): Object reference not set to an instance of an object.]
System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) +475
System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo handlers) +118
System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo handlers, IntPtr appContext, HttpContext context) +176
System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +220
System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +303
[HttpException (0x80004005): Object reference not set to an instance of an object.]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +659
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +89
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +189
This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/111686-server-error-in-application-after-minor-upgrade-umbraco-version-8111-to-8187