Episerver missing icons

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I have updated from Episerver 10 to Episerver 11. I am facing an issue and that is the icons are not visible anymore. I get the following error

Failed to load resource: the server responded with a status of 500 ()

I am talking about all the icons in admin panel. Edit icon, icon next to the name to logout etc. Anyone had that type of issue?

I get this error in the browser if I try to access the file directly

Unable to load type EPiServer.Web.Routing.IContentRouteHelper

#199040
Edited, Nov 14, 2018 8:14
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What is the full stacktrace?

#199041
Nov 14, 2018 8:27
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