Redmine's changes table, how to regenerate it?

I had this table corrupted, and couldn't repair nor backup it, so I dropped it to see if the backup would be done without it.

It succeed, but now I have an error "An error occurred when trying to access the repository: hg exited with non-zero status: 1" when trying to browse the repo. Obviously the drop of a table wouldn't be free. (I recreated it with the output of show create table).

Thanks a lot!