LDAP Error and yarn start:dev error

[Мухаметали Кусайынов]

Hello dear colleagues!  I would be grateful if you could help with the difficulties I am having. 

First) I add these values in [dspace-dir]/config/dspace.cfg allow it from this line:

plugin.sequence.org.dspace.authenticate.AuthenticationMethod =

org.dspace.authenticate.LDAPHierarchicalAuthentication

ldap.enable = true

And also these lines:

ldap.provider_url = ldap://10.5.0.25:389
ldap.id_field = cn
ldap.object_context = [КазНУ]
ldap.search_context = OU=Organizational Structure,DC=kaznu,DC=kz
ldap.email_field = mail
ldap.surname_field = sn
ldap.givenname_field = givenName
ldap.search_scope = 2
ldap.search.user = CN=Құсайынов Мұхаметәли,CN=Users,OU=Библиотека,OU=Common,OU=Organizational Structure,DC=kaznu,DC=kz
ldap.search.password =  password
ldap.netid_email_domain = @kaznu.edu.kz

But it gives me the following error:

DSPACE REST API! Response is not valid JSON!
Response returned:
{"timestamp":"2023-04-24T12:33:50.771+00:00","status":500,"error":"Internal Server Error","message":"Cannot load plugin class: java.lang.ClassNotFoundException:                                                                     org.dspace.authenticate.LDAPHierarchicalAuthentication","path":"/server/api"}

What am I doing wrong?

Second) When I type the command: yarn start:dev

Writes: Port 4000 is already in use. Would you like to use a different post?

I press yes. And it runs on a different local host. But with error: 500. 

How to fix it?

Thank you very much.
Yours sincerely, Mukhametali.

[DSpace Technical Support]

Hi,

In DSpace 7, the "LDAPHierarchicalAuthentication" class no longer exists.  It's been replaced by "LDAPAuthentication" (which still can support hierarchical LDAP).  So, your config should say:

plugin.sequence.org.dspace.authenticate.AuthenticationMethod = org.dspace.authenticate.LDAPAuthentication

The second error appears to be saying that port 4000 is already being used.  You may wish to see what is running on that port.... If you want to run the UI on a different port, you can do so, but you MUST modify the port in both the UI's config.yml AND the backend's dspace.ui.url.  Otherwise, you'll always get a 500 error.

Tim