when i am clicking on the upload button in document web part, then inside that section master page is showing(which should not show) : continued.....
 Kindly let me know how to remove that either in SharePoint designer or SharePoint 2013 itself. Also site settings is showing up in home page(but it should show in seperate new page). screenshots attached for the reference.

[enter image description here][1]


[enter image description here][2]


  [1]: https://i.stack.imgur.com/f5Lqp.png
  [2]: https://i.stack.imgur.com/5U0Wg.png