Problems importing xml file

I have a problem with importing the xml. file.
I saved it and than went to Types > Settings > Import/Export.
when I import the oil I get a error the error says:
Warning:is_dir(): open_basedis restriction in effect. File(/) is not within the allowed path(s):

and under that manny text.

what to do?

Hi,

You have saved an .xml file with a Custom Post type and you are trying to import a Custom Post Type? or?

Best Regards,
Csaba