add error checking
add error checking

mwengren/pycsw,kalxas/pycsw,benhowell/pycsw,ricardogsilva/pycsw,kalxas/pycsw,geopython/pycsw,bukun/pycsw,PublicaMundi/pycsw,rouault/pycsw,benhowell/pycsw,ocefpaf/pycsw,geopython/pycsw,geopython/pycsw,bukun/pycsw,ckan-fcd/pycsw-fcd,rouault/pycsw,ckan-fcd/pycsw-fcd,ingenieroariel/pycsw,ocefpaf/pycsw,ricardogsilva/pycsw,ingenieroariel/pycsw,mwengren/pycsw,tomkralidis/pycsw,kevinpdavies/pycsw,tomkralidis/pycsw,tomkralidis/pycsw,PublicaMundi/pycsw,ricardogsilva/pycsw,kalxas/pycsw,bukun/pycsw,kevinpdavies/pycsw