OWinStartup, OWinStartupAttribute贡品没有找到& 'Owin。IAppBuilder'不包含'Map'的定义

After upgrading my asp.net webform website from Owin 2.1.0 to Owin 3.0.1, I have the fore-mentionned compilation errors... I'm trying to use also SignalR 2 and CORS. Here's my packages.config:After upgrading my asp.net webform website from