The file path is too long:
'testModules\Files\Workflows\B Email External people when Meeting item is
created or changed\B Email External people when Meeting item is created or
changed.xoml'. Please make folder or file names shorter in the site and then try
exporting the site again.

Even though I changed the name of that workflow I still have the same problem. Does anyone know how I can locate this file it is referring to?

SharePoint Online

Cheers,

Mark E.