#error fatal: No existing author found with 'userX'

Good morning, I'm trying to migrate from svn to git on bitbucket but I've got an error.

10:19:20 Done
10:19:20 fatal: No existing author found with 'eric_***********4'
10:19:20 Unable to convert svn checkout to git
10:19:20 Svn checkout failed: %s: %s

I already commit with this account in my svn server and this message keep on showing.
Could you help me, please?