$item = & op get item $Name --fields username, password --vault $VaultName 2>$null | ConvertFrom-Json -AsHashtable
# fields argument contains a space before password causing the op command to not return password field
[securestring]$secureStringPassword = ConvertTo-SecureString $item.password -AsPlainText -Force
Since $item.password does not exist in returned hashtable, the ConvertTo-SecureString fails
Since $item.password does not exist in returned hashtable, the ConvertTo-SecureString fails