While opening None, in line None: missing unary operator "/"

Hi I am encountering this error with the convert workflow no matter what I input. Tried looking elsewhere for the solution but can't seem to find the same issue

This seems to be the error message but I am not sure what is the issue
```
raise DefinitionSyntaxError('missing unary operator "%s"' % op_text)
DefinitionSyntaxError: While opening None, in line None: missing unary operator "/"
```