log error stack instead of throwing in watcher
log error stack instead of throwing in watcher

cnchanning/vue,gebilaoxiong/vue,pramudaprakash/GITHUB,greennyreborn/vue,Jinjiang/vue,xueyaodeai/vue,leemotive/vue,lizhiyao/vue,pramudaprakash/GITHUB,Ddder-FE/vue,sreesirisha/GITMidtermexam,sreesirisha/GITMidtermexam,greennyreborn/vue,xueyaodeai/vue,Kingwl/vue,cnchanning/vue,xueyaodeai/vue,vuejs/vue,greennyreborn/vue,sreesirisha/GITMidtermexam,Jinjiang/vue,Jinjiang/vue,Hanks10100/vue,hanhongyuan/vue,Ddder-FE/vue,xueyaodeai/vue,vuejs/vue,greennyreborn/vue,pramudaprakash/GITHUB,gebilaoxiong/vue,Jinjiang/vue,posva/vue,vuejs/vue,leemotive/vue,KingMario/vue,Hanks10100/vue,Hanks10100/vue,optimizely/vue,leemotive/vue,posva/vue,Ddder-FE/vue,vuejs/vue,lizhiyao/vue,posva/vue,Kingwl/vue,hanhongyuan/vue,hanhongyuan/vue,KingMario/vue,KingMario/vue,hanhongyuan/vue,wushuyi/vue,pramudaprakash/GITHUB,sreesirisha/GITMidtermexam,KingMario/vue,leemotive/vue,Kingwl/vue,Ddder-FE/vue,cnchanning/vue,posva/vue,lizhiyao/vue,Hanks10100/vue,gebilaoxiong/vue,wushuyi/vue,lizhiyao/vue,Kingwl/vue