Realms disabled in snapshots

No Realms Button And The Output Of The Console Is:
[16:37:54 INFO]: Client> [16:37:54] MCO Availability Checker #1/ERROR: Couldn't connect to Realms
[16:37:54 INFO]: Client> coi:
[16:37:54 INFO]: Client> at cnn.a(SourceFile:251) ~[14w20b.jar:?]
[16:37:54 INFO]: Client> at cnn.b(SourceFile:86) ~[14w20b.jar:?]
[16:37:54 INFO]: Client> at boc.run(SourceFile:206) [14w20b.jar:?]