As said in the title, I got this message in the errors list, I've tried to réinstall the MVC package from nuget, it didn't work, I searched on google, and tried other solutions ...
What I have tried :
Even on new project I have this error ...
Sorry for my bad english :(
I wish someone could finally solve my problem =(
Solved by doing this:
https://stackoverflow.com/a/26772349/3448308
It downgraded to older version and worked ...
Thanks to @Pavan Chandaka
EDIT: i had to downgrade to 5.2.0 to make it work again (it was 5.2.3 (last release))
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