add logger and error fallback
add logger and error fallback

bloodybear/yona,bloodybear/yona,yona-projects/yona,yona-projects/yona,violetag/demo,Limseunghwan/oss,violetag/demo,Limseunghwan/oss,oolso/yobi,doortts/fork-yobi,ihoneymon/yobi,Limseunghwan/oss,ChangsungKim/TestRepository01,yona-projects/yona,doortts/fork-yobi,oolso/yobi,bloodybear/yona,doortts/forked-for-history,oolso/yobi,ahb0327/yobi,naver/yobi,brainagenet/yobi,ChangsungKim/TestRepository01,ahb0327/yobi,naver/yobi,brainagenet/yobi,doortts/forked-for-history,bloodybear/yona,naver/yobi,doortts/forked-for-history,ihoneymon/yobi,brainagenet/yobi,ihoneymon/yobi,yona-projects/yona,ahb0327/yobi,doortts/fork-yobi,doortts/fork-yobi