Better error message in absence of hazard calculation
Better error message in absence of hazard calculation


Former-commit-id: 8e6dabb78e80d0d17833bac800740af5bec0fb43 [formerly 60bf032a4ef7e854c5e4c441f2f929213724329c] [formerly 60bf032a4ef7e854c5e4c441f2f929213724329c [formerly 312e2b5e99c5f08e9b9745288cae7eb2be5b32ca]]
Former-commit-id: ba6c9cde7d9b24093c72a2cc95a4cb31f9358cff
Former-commit-id: a759b5a941c26dcf26661530b1876ead72b41e88
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine