As the title says, I'm having an issue where I cannot do anything from within the database/manager page such as Backup, Duplicate, Create Database, etc.

When I click on any one of those buttons, nothing happens; not even an error in dev tools console. But, I noticed there is an error that's already there when I first get on the page or when I refresh it. It's a type error and there are two of them coming from base-component.js and modal.js.

Can anyone give any help on this issue?

Uncaught TypeError: Class extends value undefined is not a constructor or null

    at base-component.js:30:31

    at base-component.js:9:101

    at base-component.js:10:3

modal.js:62 Uncaught TypeError: Class extends value undefined is not a constructor or null

    at modal.js:62:23

    at modal.js:9:93

    at modal.js:10:3