Fix [demos]
Fix [demos]


Former-commit-id: a93ca445a76ba7e5c5594a93d88fcd28a56b82bd [formerly 4c8b3616b5acd5f719911e161f6fd85221220749]
Former-commit-id: 44ab1f2ff8d77cec062e6a621a0f67d87ae46366
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine