The LDAP error code 32 is typically thrown out, if the object is not found. The cause of the problem could be an empty base object.
Please have a look at this [community question](https://community.denodo.com/answers/question/details?questionId=90670000000k9nsAAA&title=LDAP+problem%21), where someone else had a similiar issue.
Another user solved this error with adding some parameters to the server URI.
Hope this helps!