No OWIN authentication manager is associated with the request

I found the problem finally! After comparing line by line with a newly created project and finding no difference , I checked references on both projects and yes!… All the problem was from missing package :

Microsoft.Owin.Host.SystemWeb

I don’t know why this packaged is missed in package installation phase but the strange point is that why didn’t any build exception thrown? or no any dll reference error?

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Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)