It probably uses a third-party Tween plugin, which is not supported in runtime 3.
Try opening the project in old versions of Construct, for example r189
editor.construct.net/r189
If it opens, try switching the project to Runtime 3 in project properties. If the editor doesn't allow this, then you will need to manually remove Tween plugin from all events and objects. Then save the project, then you should be able to open it in recent release of C3.