Fixed readFromDB error might cause excpection
Fixed readFromDB error might cause excpection

xnum/hackmd,Rwing/hackmd,Rwing/hackmd,Rory80Hz/hackmd,Yukaii/hackmd,Rory80Hz/hackmd,janniklorenz/HackMD,aswathyjacob8/newtest,hackmdio/hackmd,Yukaii/hackmd,xnum/hackmd,jccrofty30/hackmd,ironhack/hackmd,janniklorenz/HackMD,jccrofty30/hackmd,hackmdio/hackmd,aswathyjacob8/newtest,hackmdio/hackmd,jccrofty30/hackmd,PeterDaveHello/hackmd,Yukaii/hackmd,ironhack/hackmd,PeterDaveHello/hackmd,xnum/hackmd,jackycute/HackMD,jackycute/HackMD,ironhack/hackmd,PeterDaveHello/hackmd,aswathyjacob8/newtest,Rory80Hz/hackmd,jackycute/HackMD,janniklorenz/HackMD,Rwing/hackmd