Fixed run-demos.sh [skip CI]
Fixed run-demos.sh [skip CI]


Former-commit-id: 590d2373d949ad87f5e8525eade50a0b989b887a [formerly 590d2373d949ad87f5e8525eade50a0b989b887a [formerly 17797169cb220884f80677bde173b782672ee602]]
Former-commit-id: 9d48e2c7ac02dd6262fb78f9fe8e4223347cb844
Former-commit-id: aafd4642b34c9f948088f416f0e9b06dde3f91e7
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine