learn: fixed error message opening log
learn: fixed error message opening log

Former-commit-id: d701ad40ef7d20236d28a14fabb19923813114b1 [formerly e68131edc0b5db49507bb88d84c14019521c6917]
Former-commit-id: fc9b098e72909cbcebaf0cad5c4bd7786fa62bdc [formerly 3e29539ada78ef2d300a7930e4919e1e32e12f9d]
Former-commit-id: 914896de02e10c2e57a2e4abb227a05ff6c6a1ba
simomarsili/elss