Drupal error : DrupalTemporaryStreamWrapper temporary directory not found

Most web developers prefer to develop sites on a local development machine and then upload to a live server as it speed up the development process. In my previous post, I discussed about migrating a site on local development server to a live server which you can refer this post. This post is about an error which we usually face when migrating a Drupal site from local development server to a live server. After migrating a Drupal site from local development server to a live server or simply put, from one server to another, we will usually encounter this error.

Error: Warning: file_put_contents(temporary://): failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in file_unmanaged_s


Watch this short video about the error above and how to fix this error.

Cause:

The cause of the above error is because the new server is not able to find the temporary directory set in "Configuration > Media > Temporary Directory". The temporary files directory used during the development on the local server is not found on the live server.

Resolution:

To resolve the above error, which is due to the fact that the temporary files directory used on the local server is not found on the live server, create a new directory for storing temporary files on the live server.

1) Login to the live site's control panel and open File Manager
2) Navigate to "public_html" where your site files are uploaded.
3) Create a new directory say "tmp" 
4) Now login to the live Drupal site as an administrator
5) Navigate to "Home » Administration » Configuration » Media and set temporary directory
6) Enter the temporary files directory as "\tmp"
7) Save the changes

The above actions should resolve the error.