Cannot log in to PS4 account on Minecraft

When I loaded into Minecraft it did not connect to my Playstation Account. I had tried loggin off and back on, reconnecting my account, checked the network connection and restarted my PS4 . This has just happened today. There has been no updates between my PS4 and Minecraft yesterday or today so this has to be something to do with Minecraft. When I click sign in, nothing happens.