When registering a member using wix-users you may sometimes get the following message if your chosen password is not long enough.
"Wix code SDK error: The value of Password parameter that is passed to the login method cannot be set to the value "". Its length must be between 4 and 256."
I would like to point out that this message is inaccurate as there seems to be a lower limitation in how long a password can be. The maximum password length seems to be set a 15 characters long.