Fix abort in the WebUI
Fix abort in the WebUI


Former-commit-id: 3d723aedd10c803c4cd015e5bdd176b19169c440 [formerly 689a01304808ee69ab7841ac20f0bff5e8fd2b26]
Former-commit-id: 86f576a7b4856e71e7f4f9eb1a83c71b41a8ac54
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine