My MVC Application doesn't work correctly after publish on hosting

Hello, my ASP.NET MVC apllication works on my localhost but when I publish it on gearhost , I’m getting an error message . What can I do to solving the problem ? Thanks

Error Screen :

Hey,
As suggested on your error page, try disabling custom Errors by setting <customErrors mode="Off"/> in your web.config file.

This will show you where actual crash happens.

Serhiy.

Thanks. I did it, after that the application gave a new message and suggested that: (disable OWIN startup discovery, add the appSetting owin:AutomaticAppStartup with a value of “false” in your web.config.) I applied it, so my problem has been resolved, Thank you so much.