Can't open Realms menu (error 403) [Was fixed later, idk if it was just realms servers?]

Cannot open the Realms menu, it just gives me "an error occurred (403): unknown error. I have restarted the launcher, then restarted my computer but it keeps appearing. enabled the launcher log, and noticed an error code for realms, "Could not parse RealmsError: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 2 column 2 path $" I have no clue what this means or how to fix it, but I was on earlier today and realms worked fine. Please help.