添加默认头像

client/src/components/learnSysLayout/sidebar.vue

@@ -8,7 +8,7 @@
           <img :src="UserInfo.avatar" :alt="$t('components.learnSysLayout.sideBar.updateAvatar')">
         </template>
         <template v-else>
-          <img src="@/assets/images/person-default.jpg" :alt="$t('components.learnSysLayout.sideBar.updateAvatar')">
+          <img src="@/assets/images/avatar.png" :alt="$t('components.learnSysLayout.sideBar.updateAvatar')">
         </template>
       </div>
       <el-button type="text" class="com-txt set-pwd" @click="goSetPwd">{{ $t('components.learnSysLayout.sideBar.updatePwd') }}</el-button>