bundle issue

[aafnnp]

after use yarn run build , put it on server , it's render nothing , but good on local here is my router config code

<Router basename="/novel-app">
            <div>
                <Route exact path='/' component={Index}/>
                <Route path='/Index' component={Index}/>
                <Route path='/searchResult' component={SearchResult}/>
                <Route path='/sources' component={Sources}/>
                <Route path='/categories' component={Categories}/>
                <Route path='/chapter' component={Chapter}/>
                <Route path='/cat' component={Cat}/>
            </div>
        </Router>

what should i do?