c# - Could not load file or assembly 'System.Web.Mvc' when calling an API service -


i deployed application. when tried call api service, shows error this:

'could not load file or assembly 'system.web.mvc, version=4.0.0.0, culture=neutral, publickeytoken=31bf3856ad364e35' or 1 of dependencies. system cannot find file specified.'

but using application till yesterday. no issue reported. possible reasons behind issue?

i saw many answers issue. since application in production, can deploy version 4.0.0.0 or change web config?

maybe try using fusion check libraries being loaded, can check csproj file if there right version declared in project.


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