With QGIS 3.18.2 I have created a map point cloud data with contours. I saved, Lakach_East_West_IntRas_Clip-3-24-32, and closed the project. A few months later, now using 3.24.3 I wanted to continue working on this project. It is shown to me under "recent projects" too. Now I want to open it, but the project does not load anything. No layers, just a white screen. There is also no query "Defend defective layers". Does anyone have an idea how to get the project up and running again? I have also tried it with 3.20 and 3.22 with no indication of what the problem is. There are no special characters in the file name, however, the size is 600,000 KB.