How can I solve the problem of virtualBox Virtual Machine unavailability ?, Virtualbox Virtual Machine

How can I solve the problem of virtualBox Virtual Machine unavailability ?, Virtualbox Virtual Machine

VirtualBox virtual machines are unavailable. How can this problem be solved?

I haven't been in the ipvs system for a long time, and it may get angry. I want to start the saprk cluster I set up in VB and find that slave2 is unavailable. This is not the case because the problem has been solved, at that time, I found a solution on the Internet for a long time, reinstalled, updated, and tried it. It was useless.
Later, I carefully compared the differences between the directory of the sleve1 Virtual Machine and the slave2, and found that there is a different file, that is, the previous file name is: slave2.vbox-tmp icon is a text file icon, so the solution is to rename the file and remove "-tmp", and press Enter.

After repair: