NTLM Error message on F5

I am configuring NTLM authentication on the F5 following this guide: https://devcentral.f5.com/articles/configuring-apm-client-side-ntlm-authentication.

And the F5 is reporting the following messages constantly on /var/log/apm:

Nov 22 11:15:40 localhost err nlad[16744]: 01620000:3: <0x56600b70> nlclnt[1465c010a] init: Error [0xc0000011,NT_STATUS_END_OF_FILE] connecting to DC 10.1.11.1

Protocol SMBv1 disabled!!!

Any idea Why see this messages?