[Samba] samba-check-db-script python failure

[Bob of Donelson Trophy]

When I run ./samba-check-db-repl.sh script I am getting the following: 

root at dc01:~# ./samba-check-db-repl.sh
Failed to bind - LDAP error 49 LDAP_INVALID_CREDENTIALS -
<SASL:[GSS-SPNEGO]: NT_STATUS_LOGON_FAILURE> <>
Failed to connect to 'ldap://dc02.dtsh**m.dt.' with backend 'ldap':
(null)
ERROR(ldb): uncaught exception - None
 File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line
175, in _run
 return self.run(*args, **kwargs)
 File "/usr/lib/python2.7/dist-packages/samba/netcmd/ldapcmp.py", line
968, in run
 outf=self.outf, errf=self.errf)
 File "/usr/lib/python2.7/dist-packages/samba/netcmd/ldapcmp.py", line
64, in __init__
 options=ldb_options)
 File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 114, in
__init__
 self.connect(url, flags, options)
./samba-check-db-repl.sh: line 257: [: 0: unary operator expected 

What would the "unary operator expected" issue be? 

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