Stefan Iliev 4f382a65a3 CORDA-2632 Handle exceptions when file does not exist. (#4967)
* corda-2632 Added catch clause to handle argument exceptions and display the proper error.

* Created specific exception for when the file is missing instead of the general catch all exception.

* Changes according to code review.
2019-04-25 16:23:11 +00:00
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