I’m using Linux Ubuntu, but iḿ not able to export because when i try it pop up a window saying opentimelineio dependencies missing! but when i try to install them pressing the button nothing happens! i try retry and nothing solve it, can you help how i make the export work?
Most likely you need to install it through Synaptic package-manager, which you can install through App Store.
However, I’m not certain if opentimelineio is on of the official repos. You may need to add unofficial ones to get it.
Ubuntu-forums are however the place to get best advice even though there are Ubuntu-hereticts like me here. 
humm, that is sad! a nice app can´t work well in Ubuntu version! i need to find a alternative!