Duplicate items loading from datbase? No duplicates in data.

Hi,
I have a page connected to a dataset to display all items from it. However, when I’m using loadmore() function, I have started getting this error.

Wix code SDK Warning: The data that was passed to data contained at least two items with the same ID: 03cd61c8-88a8-4fe0-861e-293aae0ae00e. Only the first item was accepted.

There are absolutely no duplicate values in the datbase, and a similar error keeps popping up everytime the loadmore() function is called.
Need help on how to fix this.
Thanks