Comment (by William Gabella):

Followed directions and did create an “app password” at https://bitbucket.org/account/settings/app-passwords/ . Did not work. Will log out completely from Bitbucket and make sure I get on with the SSO from my organization.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2173/test-poisson-equation-example