Thanks for your response sir.
In frontend there is no nickname field. Hence the end user do not have an option to enter nickname.
In backend, on editing user profile I found that there is a nickname field which has username name on it.
Hi,
I have started my website recently and I am facing the same error. Whenever my customers try to update there account, it states “error enter a nickname”. I entered above 2 coding but it did not work.
I wish to know if there is any other way to fix it.