I have the exact same problem and cannot do anything to fix it.
I am a learner on site building and programming and do not have
much knowledge for problem solving of this type yet.
I tried what you wrote, but the file "phpmyadmin" does not let me
to edit it, as it seems to be locked along with the database…
I would appreciate a response by someone from the administrators,
as nothing I have read, nor any improvising of mine has done any good.
Thank you in advance,
PS: My XAMPP Version actually is 5.6.8-0, but this choice did not exist
on your list