[fix][#3496] fixed 500 error when merge clone_thumb (#3501)
[fix][#3496] fixed 500 error when merge clone_thumb (#3501)


ShinjiTanimoto/shirasagi,shirasagi/shirasagi,shirasagi/shirasagi,tany/ss,ShinjiTanimoto/shirasagi,tany/ss,sunny4381/shirasagi,sunny4381/shirasagi,ShinjiTanimoto/shirasagi,shirasagi/shirasagi,tany/ss,shirasagi/shirasagi,ShinjiTanimoto/shirasagi,tany/ss,sunny4381/shirasagi,sunny4381/shirasagi