群头像修改时不同步的问题

pages/im/group/chat.nvue

@@ -5,7 +5,6 @@
                 <view class="cell-item" :class="item.messageDirection == 1 ? 'right' : 'left'">
                     <u-avatar class="avatar" @click="toUser(item)" size="36" shape="square"
                         :src="contact(item.senderUserId).portraitUrl" />
-                        <!-- item.content.userInfo.portraitUrl -->
                     <view class="msg">
                         <show-voice v-if="item.objectName === 'RC:HQVCMsg'" :guest="item.messageDirection == 1"
                             :msg="item.content" :name="contact(item.senderUserId).name" />
@@ -54,7 +53,7 @@
         },
         computed: {
             latestMessage() {
-                if (this.messages.length > 1) {
+                if (this.messages.length) {
                     return this.messages[this.messages.length - 1]
                 } else {
                     return {