NVUE页面调试经常报错，不知道为什么

pages/im/group/index.vue

@@ -0,0 +1,79 @@
+<template>
+    <view>
+        <view v-for="(item, index) in groups" :key="index" class="friend-flex u-border-bottom"
+            @click="toGroup(item.targetId)">
+            <u-avatar size="40" shape="square" :src="contact(item.targetId).portraitUrl" />
+            <view class="info">
+                <view class="name">{{ item.name }}</view>
+            </view>
+        </view>
+    </view>
+</template>
+
+<script>
+    import {
+        getMyGroups
+    } from '@/apis/interfaces/im.js'
+
+    export default {
+        data() {
+            return {
+                groups: []
+            }
+        },
+        computed: {
+            contact() {
+                return function(targetId) {
+                    return this.$store.getters.contactInfo(targetId)
+                }
+            }
+        },
+        onNavigationBarButtonTap() {
+            uni.navigateTo({
+                url: 'pages/im/group/create'
+            })
+        },
+        onLoad() {
+            getMyGroups().then((res) => {
+                this.groups = res
+                res.map(item => {
+                    this.$store.dispatch('updateContact', item)
+                })
+            })
+        },
+        methods: {
+            toGroup(targetId) {
+                uni.navigateTo({
+                    url: '/pages/im/group/chat?targetId=' + targetId
+                })
+            }
+        }
+    }
+</script>
+
+<style lang="scss" scoped>
+    // 好友列表
+    .friend-flex {
+        position: relative;
+        padding: 20rpx $padding;
+        display: flex;
+        flex-direction: row;
+        align-items: center;
+
+        .info {
+            flex: 1;
+            margin-left: $padding;
+
+            .name {
+                font-size: $title-size + 2;
+                font-size: $title-size + 2;
+                color: #454545 !important;
+            }
+
+            .address {
+                color: $text-gray-m;
+                font-size: $title-size-m - 5;
+            }
+        }
+    }
+</style>