Add support for error 500
Add support for error 500


Former-commit-id: e6d1984b152364e7b840aeb9b399666d894a1dda [formerly e6d1984b152364e7b840aeb9b399666d894a1dda [formerly bf3976f599399d885de583563baf261f7ee2acc2]]
Former-commit-id: 48681c28feba1ebf45576aab76017de212590903
Former-commit-id: 0b039ec6809cdedffa60f9c2ee8e86312936a70f
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine