Minecraft Realms Connection Lost Internal Server Error

Hi, I currently own a Realm, which I play privately with my family. As I was making the adjustment with the data pack and reuploaded it, as I try to join the world, it tells me Connection Lost Internal Server Error. Everyone else is still able to enter the Realm expect me. I tried on a different laptop and even not able to join. I played near the Router and unable to join. I am still playing on the latest update with Optifine. I tried reuploading it on a different slot and always says the same thing. It has been over a week, and I am still not able to join.  It has to be something with my account. Please someone help I would appreciate.