[Fixed]-"[object Object]" is not a valid number jquery slider

For first two case you have correct id to DOM element as :

<div id="turnover_slider"></div>
<div id="sold_qty_slider"></div>

but for rest of the two you have class assigned and not the id. Please correct it:

<div class="produced_qty_slider"></div>
<div class="var_pay_slider"></div>

Or change the JS code to change the jQuery selector for them as :

$( ".produced_qty_slider" ).slider({

$( ".var_pay_slider" ).slider({