Harden showCert against errors
Harden showCert against errors

codeman869/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,systimotic/FreeCodeCamp,MiloATH/FreeCodeCamp,raisedadead/FreeCodeCamp,BhaveshSGupta/FreeCodeCamp,jonathanihm/freeCodeCamp,FreeCodeCampQuito/FreeCodeCamp,no-stack-dub-sack/freeCodeCamp,otavioarc/freeCodeCamp,FreeCodeCampQuito/FreeCodeCamp,sakthik26/FreeCodeCamp,HKuz/FreeCodeCamp,otavioarc/freeCodeCamp,techstonia/FreeCodeCamp,TheeMattOliver/FreeCodeCamp,tmashuang/FreeCodeCamp,Munsterberg/freecodecamp,BhaveshSGupta/FreeCodeCamp,1111113j8Pussy420/https-github.com-raisedadead-freeCodeCamp,jonathanihm/freeCodeCamp,HKuz/FreeCodeCamp,matthew-t-smith/freeCodeCamp,sakthik26/FreeCodeCamp,systimotic/FreeCodeCamp,FreeCodeCamp/FreeCodeCamp,1111113j8Pussy420/https-github.com-raisedadead-freeCodeCamp,DusanSacha/FreeCodeCamp,codeman869/FreeCodeCamp,MiloATH/FreeCodeCamp,Munsterberg/freecodecamp,BerkeleyTrue/FreeCodeCamp,tmashuang/FreeCodeCamp,techstonia/FreeCodeCamp,no-stack-dub-sack/freeCodeCamp,BerkeleyTrue/FreeCodeCamp,pahosler/freecodecamp,TheeMattOliver/FreeCodeCamp,BrendanSweeny/FreeCodeCamp,BrendanSweeny/FreeCodeCamp,matthew-t-smith/freeCodeCamp,pahosler/freecodecamp,FreeCodeCamp/FreeCodeCamp,raisedadead/FreeCodeCamp,DusanSacha/FreeCodeCamp