You have installed vTiger 5.x and once you login you get a message “Module name is missing. Please check the module name.” If it’s a fresh install, most likely the $root_directory variable in config.inc.php is not set properly. In order to set it, do: Go to folder vtigercrm/ Open config.inc.php file Find $root_directory variable and make sure, your vTiger CRM path is correct. Once verified, try again, if it still doesn’t work do: Add “/” at the end of the path, for example: /home/content/98/html/demo/ Try again, if it still doesn’t work try: Add “/” at the beginning of the path (if it does not exist)