Magento apptha extension frontend not navigable after installation

I am using the Apptha module for magento2 , I had installed the module as well and it appears in my admin panel , but when I navigate to http://localhost:8080/marketplace , I see this result :

Apptha module routes is:

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:App/etc/routes.xsd">
  <router id="standard">
    <route id="marketplace" frontName="marketplace">
      <module name="Apptha_Marketplace" />
    </route>
  </router>
</config>