Reason is platformApplicationNotFound

I am getting the following error when i am trying to integrate MIRO board.

miroBoardsPicker.open({
          windowRef: windowRef, //Provide opened window reference
          clientId: miroClientId, // ask the backend
          action: "access-link",
          allowCreateAnonymousBoards: true, //2) Enable this option
          getToken: () => getMiroJWT(), // Provide token in async way
          success: data => {
            console.log("on success", data);
            document.querySelector("#test").innerHTML = data.embedHtml;
          },
          error: e => {
            console.log("on error", e);
          },
          cancel: () => {
            console.log("on cancel");
          },

        });

getMiroJWT() returns a promise. And the windowRef works but it says “Sorry, integration is unavailable.” . The exact error message from the console log is

“ on error Application key: **********. Reason is platformApplicationNotFound “

I could not find anything about platformApplicationNotFound in the documentation, so it would be nice if you could add that for someone else.