Error: no such option: --upgrade
A alguien le a ocurrido esto? en la versión 9
ola @albertfns si no esta en v9, puede leer aqui
ERPNext Version 9 will be released on 26th September 2017 - #22 by nabinhait
We have removed --upgrade options from bench update command. Instead now, it will take your input (Y/N) before upgrading to a major version.
ciao