I was trying html widget on trytond 5.2 but I couldn’t make it work. I added it to a text field and a widget (https://github.com/tryton/marketing_automation/blob/develop/view/activity_form.xml#L34) in the view form and configure [html] like says Configuration file for Tryton — trytond 5.3 documentation but I receive the follow message.
Internal Server Error
init() got an unexpected keyword argument ‘response’
Do I need some other config?