You should never use Joomla!'s built-in updater with Professional versions of Akeeba Backup and Admin Tools. It simply breaks the component.
Instead, please download the latest version and install it on your site using Extensions, Manage Extensions without uninstalling your existing version.
If you are using Akeeba Backup Professional and you have enabled the System Restore Points feature you will have to disable the "System - System Restore Points" plugin first. If you do not see that plugin in your system and your site's interface is NOT in English, try searching for "PLG_SRP_TITLE" instead. Disable that plugin and install the latest version of the affected component(s).
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!