The media could not be loaded, either because the server or network failed or because the format is not supported.
Solucionado
The media could not be loaded, either because the server or network failed or because the format is not supported.
Oi, Rafael, tudo bem?
Veja se esse guia pode te ajudar a resolver o seu problema: https://suporte.alura.com.br/article/268-nao-estou-conseguindo-visualizar-os-videos-dos-cursos E se estiver usando addblock desative para Alura.