Fix [demos]
Fix [demos]


Former-commit-id: be44cebbd3b51ad95e7f846f81e0d7bb6b060406 [formerly 2837c32eab81113ba7fb1a5710b8bf2ad409a9ce]
Former-commit-id: 9ad0b0b68dff580be3c2cc610b85916bf484bf52
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine