Missing server side dependencies.

Summary: When administrators remove apps for SharePoint from SharePoint sites, the apps are uninstalled and functionality is no longer available to users.

Applies to:  SharePoint Foundation 2013 | SharePoint Server 2013 Standard | SharePoint Server 2013 Enterprise 

To remove an app from a SharePoint site

• First run the = Get-SPAppInstance -Web <URL>
  

To know the name of the app that is making the problem

In my case it was

1. Verify that the user account that is performing this procedure is a member of the Site owners group.
   
2. On the site, on the Settings menu, click View Site Contents.
   
3. In the Apps section, point to the app that you want to remove, click …, and then click Remove.
   
4. Click OK to confirm that you want to remove the app.
   

To remove it with the powershell

1. At the Windows PowerShell command prompt, type the following commands, and press ENTER after each one:
   

• $instances = Get-SPAppInstance -Web <URL>
  
• # Gets all apps installed to the subsite you specify.
  
• $instance = $instances | where {$_.Title -eq ‘<app_title>’}
  
• # Sets the $instance variable to the app with the title you supply.
  
• Uninstall-SPAppInstance -Identity $instance
  
• # Uninstalls the app from the subsite.
  

  Where:
  

  • <URL> is the path site collection or subsite that contains the app.
    
  • <app_title> is the title of the app you want to remove.
    
• At the question Are you sure you want to perform this action?, type Y to uninstall the app.
  

Ref: http://technet.microsoft.com/en-us/library/fp161233(v=office.15).aspx