Import Control Points Error 18002

Hello,
I am a beginner and by following the tutorial in video, we export the points, then after he imports them into the project, I don’t understand the usefulness but on this occasion I just found out about the tutorial!

When I press OK, the window closes and nothing happens.

For the console messages, I don’t know where to go to see that.

I am French, sorry for my approximate English.

Best regards