HELP. BUG. Can't add the magic initiate feat or any feat for that matter.

Hi. Have the same problem. I wanted to add the magic initiate feat. And i both just the one feat, at first and an error appeared. Then I bought the hole Player's handbook content and this error keeps popping. 

character.CLASS_FEATURE_CHOICE_SET_REQUEST

ActionHandlerError: Unknown Request Error at new t (https://www.dndbeyond.com/Content/1-0-587-0/React/CharacterTools/dist/characterBuilder.bundle.min.js:23:49557) at https://www.dndbeyond.com/Content/1-0-587-0/React/CharacterTools/dist/characterBuilder.bundle.min.js:50:277262 at r (https://www.dndbeyond.com/Content/1-0-587-0/React/CharacterTools/dist/characterBuilder.bundle.min.js:23:212537) at Generator._invoke (https://www.dndbeyond.com/Content/1-0-587-0/React/CharacterTools/dist/characterBuilder.bundle.min.js:23:213657) at Generator.e.(anonymous function) [as throw] (https://www.dndbeyond.com/Content/1-0-587-0/React/CharacterTools/dist/characterBuilder.bundle.min.js:23:212716) at h (https://www.dndbeyond.com/Content/1-0-587-0/React/CharacterTools/dist/characterBuilder.bundle.min.js:23:118284) at Object.n [as cont] (https://www.dndbeyond.com/Content/1-0-587-0/React/CharacterTools/dist/characterBuilder.bundle.min.js:23:119097) at y (https://www.dndbeyond.com/Content/1-0-587-0/React/CharacterTools/dist/characterBuilder.bundle.min.js:23:118916) at r (https://www.dndbeyond.com/Content/1-0-587-0/React/CharacterTools/dist/characterBuilder.bundle.min.js:23:117295) at Object.e.cont (https://www.dndbeyond.com/Content/1-0-587-0/React/CharacterTools/dist/characterBuilder.bundle.min.js:23:117382)

I need to upgrade my character today. Help as soon as possible. Please 

https://www.dndbeyond.com/profile/Karladragon/characters/5431160/builder#/class/manage

is this the url? if not how do i find it?

help. https://www.dndbeyond.com/profile/Karladragon/characters/5431160/builder#/class/manage - is it this?

if not how do i find the character url