Express fails to find resources in case of parameterized route. What am I missing? - node.js

Question

In my express app I have a separate file for middlewares. I used express.static to make the resources available to the app. Code from middlewares.js...
app.use(express.static('public'));
app.use(express.static('node_modules/vue/dist'));
app.use(express.static('node_modules/bootstrap/dist/css'));
app.use(express.static('node_modules/bootstrap/dist/js'));
app.use(express.static('node_modules/multiple.js'));
app.use(express.static('node_modules/chart.js/dist'));
It works fine for all the routes. However, when I try to define a parameterized route, and render a template this way, it fails to load up the resources. Express fails to find CSS/JS/Image files from those statics. What am I missing here? Here is my code for the route..
app.get('/invoices/:id', app.authenticated, (req, res) => {
Invoices.find({_id: req.params.id}, (err, invoice) => {
if (err) {
res.json({error: err});
}
res.render('invoicesCreate');
});
});
Updated: The View file
{{#section 'classes'}}has-navigation page-dashboard{{/section}}
{{#section 'body-classes'}}-fluid{{/section}}
<div class="row" id="invoicer">
<div class="col-xs-12 col-md-6">
Fill your details and get live preview in the right side
<form class="" action="/invoices" method="post" enctype="multipart/form-data">
<div class="">
<div class="invoiceform-logo-container">
<input type="file" name="profilelogo" id="fileinput" accept="image/*" v-on:change="updateImage()">
<img v-bind:src="logo" alt="" />
</div>
<div class="invoiceform-number"></div>
<div class="invoiceform-currency"></div>
</div>
<div class="divider"></div>
<div class="">
Your Name / Company Name
<textarea name="company_name" rows="8" cols="40" v-model="from"></textarea>
Client Name / Company Name
<textarea name="client_name" rows="8" cols="40" v-model="to"></textarea>
\{{date_title}}
<input type="date" name="start_date" v-model="date">
\{{due_date_title}}
<input type="date" name="end_date" v-model="due_date" v-bind:min="date">
\{{balance_title}} \{{balance}}
<div class="input-group">
<span class="input-group-addon">$</span>
<input name="end_date" type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">
</div>
</div>
<div class="invoiceform-itemlist" v-on:focusout="checkToRemove()">
<div class="">
\{{item_header}}
\{{quantity_header}}
\{{unit_cost_header}}
\{{amount_header}}
</div>
<div class="" v-for="item in items">
<input type="text" name="items[1][item_name]" v-model="item.head">
<input type="number" name="items[1][item_quantity]" v-model="item.quantity" min="0" v-on:blur="updateAmount($index)">
<input type="number" name="items[1][item_rate]" v-model="item.rate" min="0" v-on:blur="updateAmount($index)">
<input type="number" name="items[1][item_amount]" v-model="item.amount">
</div>
<button type="button" name="button">Add Item</button>
</div>
<div class="divider"></div>
<div class="">
\{{subtotal_title}} \{{subtotal}}
\{{tax_title}}
<div class="input-group">
<input type="text" class="form-control" aria-label="Text input with dropdown button" v-model="tax">
<span class="input-group-addon">
<input type="radio" name="" aria-label="Checkbox for following text input"> %
</span>
<span class="input-group-addon">
<input type="radio" name="" aria-label="Checkbox for following text input"> F
</span>
</div>
<div id="discount" v-if="fields.discount">
Discount <input type="number" name="" v-model="discounts">
</div>
<div id="shipping" v-if="fields.shipping">
Shipping <input type="number" name="shipping" v-model="shipping">
</div>
<div class="btn-group" data-toggle="buttons">
<label class="btn btn-primary">
<input type="checkbox" name="discount" v-model="fields.discount"> \{{discounts_title}}
</label>
<label class="btn btn-primary">
<input type="checkbox" name="shipping" v-model="fields.shipping"> \{{shipping_title}}
</label>
</div>
</div>
<div class="divider"></div>
<div class="">
Total <input type="number" name="name" v-model="total" min="0">
\{{amount_paid_title}} <input type="number" name="total" v-model="amount_paid" min="0" v-bind:max="total">
</div>
<div class="divider"></div>
<div class="">
\{{notes_title}}
<input type="text" name="name" v-model="notes">
\{{payment_terms_title}}
<input type="text" name="name" v-model="terms">
<button type="submit" name="button">Save Now</button>
<button type="button" name="button">Download PDF</button>
</div>
</form>
</div>
<div class="col-xs-12 col-md-6 hidden-sm-down"></div>
</div>
{{#section 'script'}}
window.invoice = {{{json defaultInvoice}}}
console.log({{{json defaultInvoice}}})
{{/section}}