added error handling
added error handling

stweil/ocropy,tmbdev/ocropy,olivernina/ocropy,liuqingjie/Ocropy,mapbased/ocropy,catethos/ocropy,tmbdev/ocropy,danvk/ocropy,liuqingjie/Ocropy,aws623/ocropy,lunactic/ocropy,amitdo/ocropy,danvk/ocropy,tmbdev/ocropy,amitdo/ocropy,loveheaven/ocropy,kba/ocropy,loveheaven/ocropy,zuphilip/ocropy,loveheaven/ocropy,mapbased/ocropy,amitdo/ocropy,olivernina/ocropy,dnacreative/ocropy,zuphilip/ocropy,stweil/ocropy,lunactic/ocropy,kba/ocropy,dnacreative/ocropy,olivernina/ocropy,dnacreative/ocropy,braddockcg/ocropy,aws623/ocropy,braddockcg/ocropy,kba/ocropy,mapbased/ocropy,lunactic/ocropy,catethos/ocropy,zuphilip/ocropy,danvk/ocropy,catethos/ocropy,liuqingjie/Ocropy,stweil/ocropy,aws623/ocropy,braddockcg/ocropy