Problem with main.storyboard

Hello. Please tell me, I accidentally deleted main.storyboard then took it out of the trash, and back inserted into the program code. But right not moccasin letter m, and is worth "?". And when you turn on the application, the program does not go with Launch.on the main screen

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The "?" indicates that Xcode is unsure of the source control state of your storyboard file. You can control-click on the storyboard file and select "Source Control > Add Selected File". If your project isn't using the Main.storyboard file, double check that your project's Info.plist file includes an entry for "Main storyboard file base name", (which corresponds the key NSMainStoryboardFile).