Cannot upgrade from nexus2 to nexus3

I’m upgrade from nexus2 to nexus3 on a new server but i’m facing this error :

is there any settings to do ?

Hey there, @ayman_jkl - there are some situations where NXRM can’t automatically migrate some content. It could be a number of things such as a data transmission error, some kind of content that NXRM 3 would not have accepted in the first place, and so on. What I recommend is that since it’s only a very small number of items, you complete the migration and then look at the possibility of moving these pieces of content over manually (e.g. using the paths from the logs to look them up in NXRM 2 storage, seeing if they’re corrupt, and then uploading them).