Can't seem to get the game to launch. Please /assist <me> lol

This is the error i keep getting.

System.InvalidOperationException: Cannot process request because the process (4892) has exited.
at System.Diagnostics.Process.GetProcessHandle(Int32 access, Boolean throwIfExited)
at System.Diagnostics.Process.OpenProcessHandle(Int32 access)
at System.Diagnostics.Process.get_Handle()
at Ashita.Classes.ManagedInjector.InjectModule(Int32 processId, String module, Boolean suspendProcess)
at Ashita.Classes.AshitaInjector.<>c__DisplayClass0_0.<LaunchConfiguration>b__0()