The SoB (DCO) check failed ff71b2a49ddf4baa1404d2f395a781a4d997502e Expected "Saul Cooperman <sc21sc@leeds.ac.uk>", but got "Saul Cooperman <saulcoops@gmail.com>". What should I do to fix it ? All proposed commits should include a Signed-off-by: <your-name> <your-email-address> line in their commit message. This is most conveniently done by using --signoff (-s) when running git commit.