Improved error message for source model files with the wrong NRML version [skip CI]
Improved error message for source model files with the wrong NRML version [skip CI]


Former-commit-id: 4966819789f5e905a9aa68ac7887fb894f68d61f [formerly 4966819789f5e905a9aa68ac7887fb894f68d61f [formerly 2b4bd7a3a6b2b7307f42a06407375fcb56344104]]
Former-commit-id: 38009d9dfb1fabe6e5875e226d395afa2c5aafec
Former-commit-id: d28c5d244621f9257953fa82aa4dde8b603d54a3
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine