[bugfix] in case index fail, rescue will not work on nil
[bugfix] in case index fail, rescue will not work on nil

sequre/sequreisp,tymiles003/sequreisp,sequre/sequreisp,sequre/sequreisp,tymiles003/sequreisp,tymiles003/sequreisp,sequre/sequreisp,tymiles003/sequreisp