From Discord:
"
Paula33
— 06/26/2023 11:30 AM
Hi, we apologize for the inconvenience you get this ERROR 15 when you try too many times in a few seconds to access your profile or library, however after a few minutes you should be able to access the library. Thank you"
(I can't post a pic atm but you are all free to go check the pins in the discord support section to verify this statement)
From others + experience -> keep refreshing, nothing is certain atm, another browser might also help (including Edge)