Im having trouble with my realm

Each time i exit my realm  its marks an error saying that "it lost network or i was disconected , i tought it was one of tue mods  install , i remove them all , and still doing same problem , i restart the world , and still that error ,  each time i remove. A mod or  i install one  its says and error , but those mods even of the market place is marks error and. Dont let me join  i have to wait like 20 min? , i cant even close the realm when is in that error did i break my realm or someting ?