Issue to add network location using SMB Protocol

I have shared a folder called HDDtestEnv using SMB on OpenMediaVault7 (Raspberry Pi 5 PC#1). Now, I would like to add this folder to LibreELEC (Raspberry Pi 5 PC#2). Here's what I have done so far:

On LibreELEC, I navigated to "Add network location" and entered the "Server name" and "Shared folder". Then, I clicked "OK":

Then it prompts for "Username" and "Password," but I am unsure of what to enter. I did not set up a username and password for the shared folder HDDtestEnv on OpenMediaVault.