Can't upload new users by LDAP configuration/import


i’m trying to import new users using LDAP Configuration/import.
Scenario :
I set the LDAP filter based on which users i want to import :
LDAP Search Filter ==> uid = …
Then, click on Fetch.
Select, the user lines
Finally, click on Sync Selected.

But i keep having a white screen and this error :
2020-05-25 08:49:27,719 ERROR com.dfi.od.odutil.SQLConnectionHandler {raiseError} -

A bit further in the stack :
at com.dfi.od.odutil.LogFileWriter.(Unknown Source)
at com.dfi.od.odutil.LogFileWriter.(Unknown Source)
at LDAPServlet.manageProfile(Unknown Source)
at LDAPServlet.doPost(Unknown Source)
at javax.servlet.http.HttpServlet.service(

Can you help me on this ?