missing data block files

Greetings, friends.
My issue is similar to this one here -

I have saved an .aup file and after that I have decided, that there was needed some change in the project, so i did it and then i have saved the same .aup file again.

My file is in the same folder, where the data folder of the project is, but i am still getting that - missing data block files - message.

Could anybody please give me some suggestion? What should I do?

That should be impossible with current versions of Audacity. Which version are you using? (Look in “Help menu > About Audacity”)

hello, thanks for responding to me. version of my audacity is 2. 2. 1.

Wow, that’s ancient. If you have a reason not to update to the current 3.1.2 version, I’d highly recommend that you at least update to version 2.4.2 as that has several significant bug fixes.

Audacity 3.1.2 is available here: https://www.audacityteam.org/download/
Audacity 2.4.2 is available here: https://www.fosshub.com/Audacity-old.html

When the project opens, is any of the audio present? Are some parts of the project missing?