Fix [demos]
Fix [demos]


Former-commit-id: 2e931309ac5cc0de8334c0a8eb8c1f1923e31931 [formerly 0c910860f2c43088e5b837182e7d8e1d2d8214c4]
Former-commit-id: 41283d4ed6ce0185471b8558aae1bc02170ff7fc
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine