The server hard disk is broken (the backup folder of svn cannot be found), and the repository needs to be restored. However, the repository always prompts " the revision file lacks tracking newline". If the import method is used to restore, it will prompt “can't open file 'D:/repository/XX/db/revs/xx/xxxx'”，I don't have more files ,how can i fix it.
I tried Remove the revision file in revs and revprops ，but some sub folders prompts errors(lack vision file) I also tried to use different versions of svnserver ,but still didn't work
Corrupt repository in your case means data loss. Most likely you will be unable to recover the repository with all its version history without a backup. The best approach to solve this problem is to restore a backup.
To confirm that the repository is corrupt, you can run the Test-SvnRepository PowerShell cmdlet or run the repository verification job.
And find working copies checked out from this repository. Although they won't help you restore the history of changes of this corrupt repository, they will help you create a new repository with the latest snapshot of the data from the corrupt one.