Handle preprocess image error
Handle preprocess image error

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