LDAP Custom Domain Search gives "TypeError"

[savikko]

When I insert
{"filter": "(uid=#{username})", "scope": "sub"}
to LDAP Custom Domain search, Test Connection -button gives Error: TypeError.

Seems that even default (example) JSON gives TypeError.

Do I have some configuration problem?

[rodrigok]

@savikko is fixed in our branch develop, you can pass userDN and password as empty strings if you don't want to use the develop version:

{"filter": "(uid=#{username})", "scope": "sub", "userDN": "", "password": ""}