Hi Manabu
Given the date modified times on your screenshot, one of two thing is possible:
a. you have manually copied over projects from another database folder - since different databases may have different versioning, this may be the cause of the error. The correct method is to load the database in Resolve's project manager (or the Project Server) and copy projects across databases from inside the UI.
b. another software has write access to these folders and this causes modifications due to (say) a sync mechanism. For database integrity purposes, this is a bad idea as described in the
database FAQsThe same FAQs also have instructions on capturing logs for startup stability issues and guidelines on what info to include (Resolve version, OS, hardware, peripherals etc) when reporting an issue.
Regards
Shrinivas