CoreData：注释：无法在路径中加载优化模型

Question

我正在尝试在我的iOS应用程序中集成G​​oogle Map，这是在Swift4中开发的。我正在关注this教程。当我使用iOS 11.2.5在iPhone中运行应用程序时，它显示以下错误消息

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form method="post" action="" autocomplete="off" class="rule-form">
    <div class="form-row">
        <div class="form-group col-md-10">
            <input type="text" name="rule" class="form-control alert-info" value="First Rule" disabled>
        </div>
        <div class="form-group col-md-1">
            <input type="text" name="point" class="form-control alert-success" value="10" disabled>
        </div>
        <div class="form-group col-md-1">
            <button type="button" class="rule-btn" data-id="1" data-poin="10">Edit</button>
        </div>
    </div>
    <div class="form-row">
        <div class="form-group col-md-10">
            <input type="text" name="rule" class="form-control alert-info" value="Second Rule" disabled>
        </div>
        <div class="form-group col-md-1">
            <input type="text" name="point" class="form-control alert-success" value="20" disabled>
        </div>
        <div class="form-group col-md-1">
            <button type="button" class="rule-btn" data-id="2" data-poin="20">Edit</button>
        </div>
    </div>
</form>

我正在使用Xcode 9.2，iOS 11.2，Swift 4。