Make sure the erppeek library is available in the server. sudo pip install erppeek

You can install odoo-etl on the target system, however you can install on an intermediate system with some benefits. That intermediate odoo would connect with the source and the target. That way the migration information will be saved in the intermediate system and can be used to move data from other systems. If the installation is done on the destination system once the migration is complete, the most natural thing would be to eliminate the odoo-etl module, which would erase all the know-how of the migration.

Is advisable to set workers=0 and limit_time_real = 1200 in the odoo.conf file to get rid of timeout problems and please, keep an eye open to the logs.