Hello, I am having this error when opening a story containing live models from BW/4HANA, the error disappear when i close and i reopen the story. Cannot fetch csrf token from server.Unexpected token 'C' ..... is not valid JSON Do you have a...

Hello, I am using SAP analytics cloud with a live connection to BW/4HANA, when i want to fill the prompt for 0MATERIAL (Article) for example, i am having one of the given message : Do you have any idea why ? Thank you,