Repaced spawn with exec because spawn fails randomly

Signed-off-by: Juan Martin Runge <jmrunge@gmail.com>
Removed commented code

Signed-off-by: Juan Martin Runge <jmrunge@gmail.com>
Added melted profile to setup

Signed-off-by: Juan Martin Runge <jmrunge@gmail.com>
Retry loading models instead of throwing error

Signed-off-by: Juan Martin Runge <jmrunge@gmail.com>