Hi everyone. Thanks for your answers.
@sbernesto I tried to migrate insights, and in fact there where some missing migrations to do. But it doesn’t change the results. They are different projects so I believe that it should not affect one to another, but just in case it was nice to try…
@anjali Removing –overwrite-mysql flag fixes the terminal error, and indeed the process finished ok, but there were no changes in hive / SQL databases (course_activity table is empty) and insights frontend is failing 
Here the complete log https://pastebin.com/3KjAvpAp
Someone suggest that tracking logs may not be right, but if I run a SELECT inside hive it retrieves data (https://pastebin.com/hSsmgXrk)
Thanks again for your help!
Regards