ive tried multiple times to upgrade but i always get the "Internal Server Error"
Ive followed your instructions step by step but just cant seem to get it to run.
NOTICE: New .htaccess file saved as .htaccess.new.
NOTICE: The 'installer' directory still exists. You should remove it after the upgrade.
Running update script at target...
Executing database schema update.
NOTICE: Update dependencies by running `php composer.phar update --no-dev`
This instance of Roundcube is up-to-date.
Have fun!
All done.