This issue has been resolved and the training sessions are opening normally again. Apologies for the inconvenience this incident may have caused you.
Posted Nov 11, 2020 - 10:14 UTC
Update
Sorry to inform you that this issue still persists. We're working hard to fix it as soon as possible. Apologies for the inconvenience.
Posted Nov 11, 2020 - 07:15 UTC
Investigating
Attention Spanish-speaking Flow users: If you're using Flow in Spanish, unfortunately the training sessions are not opening at the moment. We're investigating the root cause as we speak. As a workaround, you can temporarily change your Flow language into English, for example, and then view your training sessions. To change the language, go to Ajustes > General > Idioma de Flow. All data is safe.