hi @sana_sanya,
Do you remember the missing file name?
Can you trigger this behaviour every time i.e. whenever you open the project does it prompt you for the same missing file?
Looking at your project file you are directly referencing files in the download folder. That is not good practice and is a nightmare waiting to happen. Instead you should copy all project resources (images, video, audio etc) to the project folder itself.
For example, lets say all your shotcut projects (mlt files) are kept under /home/nida/video/shotcut and this one is under the “is money really important” subfolder that gets automatically created when you first create your project. At that point you should begin copying or moving all relevant material to that folder, and organise accordingly (if you wanted to you could create separate audio, video, and image folders underneath the “is money really important” folder, but this isn’t necessary).
Also, so this hopefully doesn’t happen again: