I get this issue when setting up a simple workflow to create a sub site. I am using Office 365 and Nintex Workflow for O365. I have setup the connection in the O365 create site action using the following:
ParentURl: fully qualified name including site collection
Connection: using my O365 username and password
I test using the site workflow and start a new worfklow. It prompts me for the variable I have setup to parse the site name and Title.
An exception occurred while processing parameter [InputNtxConnectionId]
The above error occurs, any help will be greatly appreciated.