Update collection via github

Question:
How do I update my collection via github?

Product:
Wix Data api

What are you trying to achieve:
I am trying to update a collection that holds Rss items from 5 different sources (Collection id: NewsFeed). Creating the repository in github, added the necessary files. However when connecting to Wix, I continously return error “404 not found”. Ive confirmed my collection id, api key, account id, site id and endpoint insert /collections/NewsFeed/items…

What have you already tried:
I’ve consulted Velo assistant, lutra, git expert gpt and wix docs. Tried to perform a test Get using Postman and return 500 error.

Additional information:
There are numerous errors in the backend loggin tool in Wix. The only error shown in detail was 0027 related to permissions. I’ve opened permissions to Everyone accept “Delete”, Also updated backend function file but I think that’s the culprit.

Please help.