Hi!
I have the same problem. On the onboard page (https://cursor.com/onboard), I get the error message “Error loading default branch” and in the response of “api/background-composer/get-repository-branches”, the status code 401 and error “ERROR_GITHUB_NO_USER_CREDENTIALS” is displayed. Incidentally, GITHUB is not correct in my case, as we use GitLab (Github is not connected), but perhaps this can be ignored.
This thread could be related → Failed to determine repository default branch - #8 by ahar
The repositories are also not fully loaded; only a few are displayed in the drop-down list, but when you click on “Refresh”, /api/dashboard/fetch-all-installation-repos (POST) returns “405 Method Not Allowed” after a while… searching dynamically is not working. I hope that’s not due to the sheer number of repositories.