Error integrating Samba with already configured Openldap

After setting up my Openldap on Centos 7, I got a problem while integrating Samba
(I followed many tutorials, ex. https://admin.shamot.cz/?p=470).

After running the command:

net getlocalsid

I got an error:

ailed to bind to server ldap://172.16.0.180 with dn="cn=ldapadm"
Error: Invalid credentials
(unknown) 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://172.16.0.180 did not correctly init (error
was NT_STATUS_CANT_ACCESS_DOMAIN_INFO) WARNING: Could not open passdb