During theme or plugin installation if you see an error like “Destination directory for file streaming does not exist or is not writable” or “Missing a temporary folder.” as shown in the screenshot below.
Then add the following code in the wp-config.php file which is present in the root folder of WordPress.
define('WP_TEMP_DIR', ABSPATH . 'wp-content/');
For any further assistance, feel free to create a new ticket at our support website and we will be happy to help.