uni-app运行时报错，实在是不晓得什么问题，来自一位后端转前端的萌新。

问题1：
20:01:27.506 [Vue warn]: Property or method "item" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property. See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.
20:01:27.526 01:37.089 9033 9061 I console :
20:01:27.546 01:37.089 9033 9061 I console : (found in pages/giftsDetail/giftsDetail)ERROR
20:01:27.567 [Vue warn]: Error in render: "TypeError: undefined is not an object (evaluating '_vm.item.click')"
20:01:27.588 01:37.089 9033 9061 I console :
20:01:27.608 01:37.089 9033 9061 I console : (found in pages/giftsDetail/giftsDetail)__ERROR
20:01:27.629 TypeError: undefined is not an object (evaluating '_vm.item.click')ERROR
20:01:27.650 [Vue warn]: Property or method "item" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property. See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.
20:01:27.670 01:37.138 9033 9061 I console :
20:01:27.690 01:37.138 9033 9061 I console : (found in pages/giftsDetail/giftsDetail)ERROR
20:01:27.711 [Vue warn]: Error in render: "TypeError: undefined is not an object (evaluating '_vm.item.click')"
20:01:27.732 01:37.138 9033 9061 I console :
20:01:27.752 01:37.138 9033 9061 I console : (found in pages/giftsDetail/giftsDetail)__ERROR
20:01:27.773 TypeError: undefined is not an object (evaluating '_vm.item.click')ERROR
问题2：
For developer:Do not set same key "[object Object]" in wx:key. at uniapp://ready:1
问题3：
20:17:43.152 thirdScriptError
20:17:43.173 Event Handler Error @ pages/setCenter/setCenter#handleEvent
20:17:43.193 17:52.727 14654 14679 I console : (global function):8255:28
20:17:43.235 17:52.727 14654 14679 I console : (global function):8250:26
20:17:43.275 17:52.727 14654 14679 I console : handleEvent@(global function):8240:20
20:17:43.296 17:52.727 14654 14679 I console : safeCallback@(global function):8:424232
20:17:43.317 17:52.727 14654 14679 I console : (global function):8:564953
20:17:43.337 17:52.727 14654 14679 I console : (global function):8:568181
20:17:43.358 17:52.727 14654 14679 I console : (global function):8:567455
20:17:43.378 17:52.727 14654 14679 I console : n@(global function):8:171427
20:17:43.398 17:52.727 14654 14679 I console : subscribeHandler@(global function):8:1563
20:17:43.419 17:52.727 14654 14679 I console : (global function):7:77316
20:17:43.440 17:52.727 14654 14679 I console : (global function):7:77337
20:17:43.461 17:52.727 14654 14679 I console : B@(global function):7:4462
20:17:43.481 17:52.727 14654 14679 I console : (global function):7:79806
20:17:43.504 17:52.727 14654 14679 I console : consume@(weex framework):1:19850
20:17:43.543 17:52.727 14654 14679 I console : (weex framework):1:177648__ERROR