Shotcut doesn't load the saved project

Hi guys i’m a new user, and i have a serious problem, pheraps a Shotcut’s bug. In substance, when i try to open a saved project in .mlt format, shotcut go down and doesn’t open it. I had try to remove and reinstall the app, but the problem persists. I don’t understand how or why this happens, and i’ve not found a solution on web. So you can help me?
Thank you in advance and sorry for my english

Can you do a cpopy of the .mtl to see if it’s the same?

Did you wipe all cache informations ?