Hi. Im using kdenlive-19.04.1-x86_64.appimage on ubnutu 18.04. I deleted a clip from the timeline or an effect, then program turned off.
After re-opening the project, an error occurs:
  Invalid composition transition0 found on track 4 at 47938, composing with track 3
  Invalid composition transition0 found on track 4 at 33796, composing with track 3
  Invalid composition transition0 found on track 4 at 47144, composing with track 3

This is 4 days of my work. Please help

If you want to send the project, I can try to repair it (only the .kdenlive file)

Perhaps you could offer help as to how to repair it?

Similar thing happened to me. I should send the file to you?