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typeErrorJS
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Alec

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
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André Canilho
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There seems to be a question very similar to this: https://www.odoo.com/pt_BR/forum/ajuda-1/typeerror-class-extends-value-undefined-is-not-a-constructor-or-null-258943

It doesn't look like a DB issue, have you been developing OWL/javascript functionalities or anything similar for your project?
If that is the case, make sure you are importing the correct dependencies for your new modules.

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KHADIJA RACHMOUN
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@Alex did you  find the solution, I have the same problem?

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