Error 500 with upload into realms BONUS ITEM!!! Loads unrelated world! Act now!!

I know this is a duplicate bug; however, here is no documentation on how I can fix this myself.

Loading a new realm results in Error code 500 and then immediately entering results in 15+ minutes stuck in "Loading realm" I canceled after 15 minutes and reloaded. This results in some basic minecraft default world.

 

Please help!

 

Thanks, 

Cip