administrator/index.php
Not OK

* Use the slave site deployed directory as administrator directory when present. Otherwise use the master website directory

Actions:

* Replace 2 lines by 26 lines in aim to use the slave site deploy directory instead of the master directory
* This allow for example to manage the specific media or image directory from the back-end

How I will solve the above issue. What is actually saying me to do ??

Please help me with this my installation screwed up for this.

The installation of the patches is performed with the "install" button present in the top right of the "check patches" menu.
See tutorial video that show how to install the patches.
If you receive error like "copy failed" during the install then check the permission of your files and folder. Check also the owner/group of the files and folder. In this case, you can also try using the Joomla "FTP layer" with an FTP login and psw that has the permission to update the files.