After installed odoo, install website, go to website, the home page navbar is missing, i checked the html what happen the class " o_menu_loading" is not gone after the page finished loading.  i have tried community version in same browser, it's no problem

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<div class="collapse navbar-collapse" id="top_menu_collapse">
<ul class="nav navbar-nav ml-auto text-right o_menu_loading" id="top_menu">
<li class="nav-item">
<a role="menuitem" href="/" class="nav-link active">
<span data-oe-model="website.menu" data-oe-id="5" data-oe-field="name" data-oe-type="char" data-oe-expression="submenu.name">Home</span>
</a>
</li>
<li class="nav-item">
<a role="menuitem" href="/contactus" class="nav-link ">
<span data-oe-model="website.menu" data-oe-id="6" data-oe-field="name" data-oe-type="char" data-oe-expression="submenu.name">Contact us</span>
</a>
</li>
<li class="nav-item">
<a role="menuitem" href="/" class="nav-link active">
<span data-oe-model="website.menu" data-oe-id="7" data-oe-field="name" data-oe-type="char" data-oe-expression="submenu.name">Home</span>
</a>
</li>



<li class="nav-item divider"></li>
<button type="button" class="navbar-toggler" data-toggle="collapse" data-target="#top_menu_collapse" data-oe-model="ir.ui.view" data-oe-id="410" data-oe-field="arch" data-oe-xpath="/data/xpath[2]/nav/div[1]/button[1]">
<span class="navbar-toggler-icon"></span>
</button><li class="nav-item dropdown">
<a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown">
<b>
<span>OdooBot</span>
</b>
</a>
<div class="dropdown-menu js_usermenu" role="menu">

<a href="/my/home" role="menuitem" class="dropdown-item">My Account</a>
<a id="o_logout" class="dropdown-item" role="menuitem" href="/web/session/logout?redirect=/">Logout</a>
</div>
</li>



</ul>
</div>