Editor not loading, 404 error

Hi,
I wanted to edit a post on my website with Elementor but the editor is not loading, also safe mode wont change anything.
I already went through this list:
https://elementor.com/help/cant-edit-with-elementor/#grayendless

But cant seem to find out how to fix it.
The console in dev tools shows theses errors however:

Response {type: 'basic', url: 'https://genoheld.de/wp-json/elementor/v1/global-widget/templates', redirected: false, status: 404, ok: false, …}
Response {type: 'basic', url: 'https://genoheld.de/wp-json/elementor/v1/globals', redirected: false, status: 404, ok: false, …}

It is a time critial issue, since I need to be able to work on the posts and publish them tomorrow. Would appreciate any help in that regard.
Thank you!

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