LDAP + SAMBA problems

After setting up my openldap on centos 7 i got a problem while integrating samba !
i followed the steps of many tuto :
exemple : https://admin.shamot.cz/?p=470
but i found a problem while taping that command :
net getlocalsid
i got an error :
ailed to bind to server ldap:// with dn=”cn=ldapadm” Error: Invalid credentials
pdb_init_ldapsam: WARNING: Could not get domain info, nor add one to the domain. We cannot work reliably without it.
pdb backend ldapsam:ldap:// did not correctly init (error was NT_STATUS_CANT_ACCESS_DOMAIN_INFO)
WARNING: Could not open passdb

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Author: Bruce