This article covers methods to fix WordPress error "Destination Folder Already Exists".
Basically, this WordPress error triggers when a folder with the same name as that of the plugin or theme already exists.
To resolve WordPress "Destination folder already exists" error:
Since the error is caused by a plugin or theme folder that already exists, the easiest way to solve the error is by deleting the folder.
The process of deleting a theme via FTP is the same one you use for deleting a plugin.
The only exception is that you need to navigate to wp-content/themes instead of wp-content/plugins.
1. To delete the plugin folder, connect to your server using your FTP credentials and navigate to your root WordPress directory, often called public_html.
2. Then, go to the wp-content/plugins directory.
3. Within the plugins directory, find the plugin folder mentioned in the error message.
4. When you've located the folder you need, right-click on it and press the Delete option from the menu that appears.
5. After that, you will be prompted to confirm your choice. Press the Yes button to proceed.
6. Then, you will have to wait a bit until the plugin folder, as well as all directories and files within it, are deleted.